@Nullable
  private static GrReferenceExpression getMethodExpression(@NotNull GrMethodCall call) {
    GrExpression result = call.getInvokedExpression();
    return result instanceof GrReferenceExpression ? (GrReferenceExpression)result : null;
  }
@Nullable
  private static GrReferenceExpression getMethodExpression(@NotNull GrMethodCall call)