[feature] Locate all Implementing Methods

[shapaz]

Describe your idea

I frequently run into calls to methods of interfaces or abstract classes. Double-clicking the method takes me to the abstract definition in the interface / base class, but not to actual implementations.
The manual way to find implementations is either free-text searching the method name preceded with a space, or search all classes with "implements X" / "extends X", then scrolling through the code to find the desired method.

I suggest showing a small window of all possible implementations for the called method, either directly on double-clicking, or using a dedicated control key.