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psalm/docs/running_psalm/issues/TooManyTemplateParams.md
2020-03-20 19:13:56 -04:00

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# TooManyTemplateParams
Emitted when using the `@extends`/`@implements` annotation to extend a class and adds too
many types.
```php
<?php
/**
* @template-implements IteratorAggregate<int, string, int>
*/
class SomeIterator implements IteratorAggregate
{
public function getIterator() {
yield 5;
}
}
```