`RoutePluginManager` has incorrect generic statements

[boesing]

Bug Report

Q	A
Version(s)	3.6.0 until latest

Summary

The RoutePluginManager is a plugin manager implementations.
Plugin manager implementations have to provide their generic type instead of passing it to someone else.

Current behavior

laminas-router/src/RoutePluginManager.php

Lines 30 to 31 in fceae29

	* @template InstanceType of RouteInterface
	* @extends AbstractPluginManager<InstanceType>

How to reproduce

Just consume the route plugin manager via service manager and then use either get or build method.
Psalm is only able to infer mixed|object instead of RouteInterface (which is the instance the plugin manager provides).

laminas-router/src/RoutePluginManager.php

Line 41 in fceae29

protected $instanceOf = RouteInterface::class;

Expected behavior

- * @template InstanceType of RouteInterface
- * @extends AbstractPluginManager<InstanceType>
+ * @extends AbstractPluginManager<PluginInterface> 
 * @psalm-import-type ServiceManagerConfiguration from ServiceManager
 */
class RoutePluginManager extends AbstractPluginManager

[Xerkus]

This implies service manager annotations are wrong somehow. Actually it looks like what we seen with template constraints in inputfilter today.

[boesing]

Service manager does not provide generics on class Level. So these cant be wrong. only plugin managers have class-level generics as these are limited to specific class implementations via instanceOf property.

This has been further improved in v4 of servicemanager via "SingleInstancePluginManager" abstraction.

might just be Inputfilter having invalid generics as well.