Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 13 | View Code Duplication | final class Version20190510112541 extends AbstractMigration  | 
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| 14 | { | 
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| 15 | public function up(Schema $schema): void  | 
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| 26 | public function down(Schema $schema): void  | 
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| 36 | }  | 
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