psiImplUtilClass method matching fails for methods w/ generic method parameters

[calexHG]

The following, unfortunately does not get matched:

        @JvmStatic @Override fun <TElement : PsiNamedElement>
        setName( element: TElement, @NonNls name: String ): TElement
        {
            // ...
        }

Only a lesser implementation like the following will get matched:

        @JvmStatic @Override fun
        setName( element: PsiNamedElement, @NonNls name: String ): PsiNamedElement
        {
            // ...
        }

..So one must instead create a new mixin class for every class that wants to implement common generic methods.

(Kotlin code)