Type Provider "Interface"

[havvg]

Currently the Type Provider can only be configured to provide a class.
However, when using e.g. PHPUnit_Framework_TestCase::getMockForAbstractClass an interface is valid, too.

It should also allow a combined provider (class or interface), just like method references class_interface.

[Haehnchen]

then we also should support

function('Foo')

[Haehnchen]

"class" sould already support interface, phpstorm api changed for that (interface==class). dont know if already inside v7, but i will add another provider