@Override
  public void visitLiteralExpression(@NotNull GrLiteral literal) {
    final IElementType elementType = literal.getFirstChild().getNode().getElementType();
    if (GroovyTokenSets.STRING_LITERALS.contains(elementType)) {
      checkStringLiteral(literal);
    }
    else if (elementType == GroovyTokenTypes.mREGEX_LITERAL || elementType == GroovyTokenTypes.mDOLLAR_SLASH_REGEX_LITERAL) {
      checkRegexLiteral(literal.getFirstChild());
    }
  }
@Override
  public void visitLiteralExpression(@NotNull GrLiteral literal)