Right-click on the interface, and choose “Open type hierarchy”. Then click on “Show the subtype hierarchy”.
- In the interface, move the cursor to the method name. Press F4. => Type Hierarchy view appears
- In the lower part of the view, the method should already be selected. In its toolbar, click “Lock view and show members in hierarchy” (should be the leftmost toolbar icon).
- In the upper part of the view, you can browse through all implementations of the method.
The procedure isn’t very quick, but it gives you a good overview.