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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author    Donatas Navidonskis <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since     2017  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @class     BaseSliderItem  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @property int    BlockID  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @property int    SortOrder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @property string Title  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @property string Content  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @method SliderBlock Block  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class BaseSliderItem extends \DataObject { | 
            
                            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @config  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $db = [  | 
            
                            
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                        'Title'     => 'Varchar',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'Content'   => 'HTMLText',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'SortOrder' => 'Int',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @config  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $has_one = [  | 
            
                            
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                        'Block' => 'SliderBlock',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * The default sort expression. This will be inserted in the ORDER BY  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * clause of a SQL query if no other sort expression is provided.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @config  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $default_sort = 'SortOrder ASC';  | 
            
                            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function singular_name() { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return _t('SliderItem.SINGULARNAME', 'Slider'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function plural_name() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return _t('SliderItem.PLURALNAME', 'Sliders'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Default summary fields within localized label title's.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function summaryFields() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Title'      => $this->fieldLabel('Title'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'SliderType' => $this->fieldLabel('SliderType'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSliderType() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->singular_name();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \FieldList  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getCMSFields() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fields = parent::getCMSFields();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fields->removeByName(['SortOrder', 'Title', 'Content']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fields->findOrMakeTab('Root.Media', $this->fieldLabel('Media')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fields->addFieldsToTab('Root.Main', [ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            \TextField::create('Title', $this->fieldLabel('Title')), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $contentField = \HtmlEditorField::create('Content', $this->fieldLabel('Content')), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentField  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->setRows(15);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->extend('updateCMSFields', $fields); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $fields;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param bool $includeRelations  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function fieldLabels($includeRelations = true) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_merge(parent::fieldLabels($includeRelations), [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Title'      => _t('SliderItem.TITLE', 'Title'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Content'    => _t('SliderItem.CONTENT', 'Content'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Picture'    => _t('SliderItem.PICTURE', 'Picture'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Media'      => _t('SliderItem.MEDIA', 'Media'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'Video'      => _t('SliderItem.VIDEO', 'Video'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'SliderType' => _t('SliderItem.SLIDER_TYPE', 'Slider type'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \HTMLText  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function forTemplate() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->renderWith(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            sprintf("%s_%s", $this->Block()->ClassName, $this->ClassName) | 
            
                            
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                        );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.