@Override
    public void visitParameter(@NotNull GrParameter grParameter) {
      super.visitParameter(grParameter);
      final String name = grParameter.getName();
      final PsiElement scope = grParameter.getDeclarationScope();
      if (scope instanceof GrCatchClause ||
          scope instanceof GrForStatement) {
        return;
      }
      if (isValid(name)) {
        return;
      }
      registerVariableError(grParameter, name);
    }
@Override
    public void visitParameter(@NotNull GrParameter grParameter)