return true;
}
public Expression evaluate(FunctionExpression input) {
Expression evaluatedParameter = evaluate(input.getParameter());
List<Expression> splitParameters = (evaluatedParameter.getType() == ASTCssNodeType.EMPTY_EXPRESSION) ? new ArrayList<Expression>() : evaluatedParameter.splitByComma();
if (!input.isCssOnlyFunction()) {
for (FunctionsPackage pack : functions) {
if (pack.canEvaluate(input, splitParameters))
return pack.evaluate(input, splitParameters, evaluatedParameter);