TooManyTemplateParams

Emitted when using the [@extends](https://github.com/extends)/[@implements](https://github.com/implements) annotation to extend a class and adds too many types.

<?php

/**
 * [@template-implements](https://github.com/template-implements) IteratorAggregate<int, string, int>
 */
class SomeIterator implements IteratorAggregate
{
    public function getIterator() {
        yield 5;
    }
}