@Nullable
      @Override
      public String getEditorTabName(@Nullable ChangeViewDiffRequestProcessor.Wrapper wrapper) {
        return wrapper != null
               ? VcsBundle.message("commit.editor.diff.preview.title", wrapper.getPresentableName())
               : VcsBundle.message("commit.editor.diff.preview.empty.title");
      }
@Nullable
      @Override
      public String getEditorTabName(@Nullable ChangeViewDiffRequestProcessor.Wrapper wrapper)