This attribute is the equivalent of the @implements or @template-implements annotations. It can be applied to a class.
The attribute accepts one or more strings that define the type of the templated interfaces that are implemented. The attribute itself does not have a knowledge of which interface types are valid and which are not and this will depend on the implementation for each particular tool.
We aim to accept all the interface types accepted by static analysis tools for the @template-implements annotation.
The arguments need to be unnamed arguments.
If the class has more than one interface that we want to specify, the types for the different interfaces can either be declared as a list of strings for a single TemplateInterface attribute or as a list of TemplateInterface attributes (or even a combination of both, though we don't expect this to be actually used).
<?php
use PhpStaticAnalysis\Attributes\Template;
use PhpStaticAnalysis\Attributes\TemplateImplements;
#[Template('T')]
interface TemplateInterface {}
#[TemplateImplements('TemplateInterface<int>')] // this is the type of the implemented interface
class MyClass implements TemplateInterface {}