Fan.Sys.Type.isNullable C# (CSharp) Method

        public virtual bool isNullable()
        {
            return false;
        }

        /// <summary>
        /// Parameterize t, where t is a generic parameter type such as V.
        /// </summary>
        internal Type parameterize(Type t)
        {
            bool nullable = t.isNullable();
            Type nn       = t.toNonNullable();

            if (nn is ListType)
            {
                t = parameterizeListType((ListType)nn);
            }
            else if (nn is FuncType)
            {
                t = parameterizeFuncType((FuncType)nn);
            }
            else
            {
                t = doParameterize(nn);
            }
            return(nullable ? t.toNullable() : t);
        }