@Override
    public void visitParameter(@NotNull PsiParameter variable) {
      final PsiElement scope = variable.getDeclarationScope();
      if (!(scope instanceof PsiLambdaExpression)) {
        return;
      }
      final String name = variable.getName();
      if (isValid(name)) {
        return;
      }
      registerVariableError(variable, name);
    }
@Override
    public void visitParameter(@NotNull PsiParameter variable)