boolean (PsiElement element) { if (element == null) return false; final ASTNode astNode = element.getNode(); if (astNode == null) { return false; } final IElementType elementType = astNode.getElementType(); final ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(element.getLanguage()); if (parserDefinition != null) { final TokenSet literals = parserDefinition.getStringLiteralElements(); return literals.contains(elementType); } return false; }