Code Duplication    Length = 5-5 lines in 2 locations

src/PhpSpreadsheet/Reader/Gnumeric.php 2 locations

@@ 251-255 (lines=5) @@
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                            $docProps->setCreator(trim($propertyValue));
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                            $docProps->setLastModifiedBy(trim($propertyValue));
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                            break;
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                        case 'date':
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                            $creationDate = strtotime(trim($propertyValue));
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                            $docProps->setCreated($creationDate);
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                            $docProps->setModified($creationDate);
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                            break;
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                        case 'description':
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                            $docProps->setDescription(trim($propertyValue));
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                            break;
@@ 276-280 (lines=5) @@
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                            $docProps->setCreator(trim($propertyValue));
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                            $docProps->setLastModifiedBy(trim($propertyValue));
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                            break;
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                        case 'creation-date':
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                            $creationDate = strtotime(trim($propertyValue));
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                            $docProps->setCreated($creationDate);
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                            $docProps->setModified($creationDate);
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                            break;
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                        case 'user-defined':
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                            list(, $attrName) = explode(':', $attributes['name']);
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                            switch ($attrName) {