| 1 | <?php | ||
| 13 | class PdfLetters extends RecordManager | ||
| 14 | { | ||
| 15 | use PdfLettersTrait; | ||
| 16 | |||
| 17 | /** | ||
| 18 | * @inheritdoc | ||
| 19 | */ | ||
| 20 | public function getPrimaryKey() | ||
| 24 | |||
| 25 | public function generateTable() | ||
| 29 | |||
| 30 | /** | ||
| 31 | * @param $type | ||
| 32 | * @return AbstractRecordsTrait | ||
|  | |||
| 33 | */ | ||
| 34 | public function getParentManagerFromType($type) | ||
| 38 | |||
| 39 | /** | ||
| 40 | * @return string | ||
| 41 | */ | ||
| 42 | protected function getCustomFieldsManagerClass() | ||
| 46 | } | ||
| 47 | 
In PHP traits cannot be used for type-hinting as they do not define a well-defined structure. This is because any class that uses a trait can rename that trait’s methods.
If you would like to return an object that has a guaranteed set of methods, you could create a companion interface that lists these methods explicitly.