@Override
    public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression) {
      super.visitMethodCallExpression(expression);
      if (myStrict && expression.getParent() instanceof PsiExpressionStatement) {
        final PsiReferenceExpression methodExpression = expression.getMethodExpression();
        if (methodExpression.getQualifierExpression() == null && expression.resolveMethod() == null) {
          invalidCode = true;
          stopWalking();
        }
      }
    }
@Override
    public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression)