System.Xml.Xsl.Runtime.XsltLibrary.FunctionAvailable C# (CSharp) Method

        public bool FunctionAvailable(XmlQualifiedName name)
        {
            if (_functionsAvail == null)
            {
                _functionsAvail = new HybridDictionary();
            }
            else
            {
                object obj = _functionsAvail[name];
                if (obj != null)
                {
                    return (bool)obj;
                }
            }

            bool result = FunctionAvailableHelper(name);
            _functionsAvail[name] = result;
            return result;
        }