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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace ShippoClient\Entity;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TurmericSpice\ReadableAttributes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Tracks  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    use ReadableAttributes { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        mayHaveAsString as public getCarrier;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        mayHaveAsString as public getTrackingNumber;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        mayHaveAsString as public getEta;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        toArray as public __toArray;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \ShippoClient\Entity\TrackingStatus  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getTrackingStatus()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->attributes->mayHave('tracking_status') | 
            
                            
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                            ->asInstanceOf('\\ShippoClient\\Entity\\TrackingStatus'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \ShippoClient\Entity\TrackingHistory  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getTrackingHistory()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $entities = $this->attributes->mayHave('tracking_history') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->asInstanceArray('ShippoClient\\Entity\\TrackingStatus'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new TrackingHistory($entities);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \ShippoClient\Entity\Location  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getAddressFrom()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $addressFrom = $this->attributes->mayHave('address_from')->asArray(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new Location($addressFrom);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \ShippoClient\Entity\Location  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getAddressTo()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $addressTo = $this->attributes->mayHave('address_to')->asArray(); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return new Location($addressTo);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \ShippoClient\Entity\ServiceLevel  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getServiceLevel()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->attributes->mayHave('servicelevel')->asInstanceOf('\\ShippoClient\\Entity\\ServiceLevel'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function toArray()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'carrier'          => $this->getCarrier(),  | 
            
                            
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                            'tracking_number'  => $this->getTrackingNumber(),  | 
            
                            
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                            'tracking_status'  => $this->getTrackingStatus()->toArray(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'tracking_history' => $this->getTrackingHistory()->toArray(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'eta'              => $this->getEta(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'address_from'     => $this->getAddressFrom()->toArray(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'address_to'       => $this->getAddressTo()->toArray(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'servicelevel'     => $this->getServiceLevel()->toArray(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: