System.Dynamic.Utils.TypeUtils.GetNonNullableType C# (CSharp) Method

        public static Type GetNonNullableType(this Type type)
        {
            if (IsNullableType(type))
            {
                return type.GetGenericArguments()[0];
            }
            return type;
        }

        //CONFORMING
        internal static MethodInfo GetUserDefinedCoercionMethod(Type convertFrom, Type convertToType, bool implicitOnly)
        {
            // check for implicit coercions first
            Type nnExprType = TypeUtils.GetNonNullableType(convertFrom);
            Type nnConvType = TypeUtils.GetNonNullableType(convertToType);

            // try exact match on types
            MethodInfo[] eMethods = nnExprType.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
            MethodInfo   method   = FindConversionOperator(eMethods, convertFrom, convertToType, implicitOnly);

            if (method != null)
            {
                return(method);
            }
            MethodInfo[] cMethods = nnConvType.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
            method = FindConversionOperator(cMethods, convertFrom, convertToType, implicitOnly);
            if (method != null)
            {
                return(method);
            }
            // try lifted conversion
            if (nnExprType != convertFrom || nnConvType != convertToType)
            {
                method = FindConversionOperator(eMethods, nnExprType, nnConvType, implicitOnly);
                if (method == null)
                {
                    method = FindConversionOperator(cMethods, nnExprType, nnConvType, implicitOnly);
                }
                if (method != null)
                {
                    return(method);
                }
            }
            return(null);
        }