private void inspectArgumentsNumber(@NotNull final PyExpression rightExpression) {
        final int arguments = inspectArguments(rightExpression, rightExpression);
        if (myUsedMappingKeys.isEmpty() && arguments >= 0) {
          if (myExpectedArguments < arguments) {
            registerProblem(rightExpression, PyPsiBundle.message("INSP.too.many.args.for.fmt.string"));
          }
          else if (myExpectedArguments > arguments) {
            registerProblem(rightExpression, PyPsiBundle.message("INSP.too.few.args.for.fmt.string"));
          }
        }
      }
private void inspectArgumentsNumber(@NotNull final PyExpression rightExpression)