ReSharper Web Help

This Navigate to command navigates to all interface members implemented in the current type. If there is only one implemented member, ReSharper will set the caret there; if there are several implemented members, they all will be highlighted.

It becomes available when you invoke the Navigate To shortcut upon an interface entry in a type that implements it:
Navigation_and_Search__Navigate_from_Here__implementingmembers

Tip

To navigate to the next highlighted implementing member, choose ReSharper | Find | Next Item or press Ctrl+Alt+DownCtrl+Alt+PageDown.
To navigate to the previous highlighted implementing member, choose ReSharper | Find | Previous Item or press Ctrl+Alt+UpCtrl+Alt+PageUp.