ServiceStack.OrmLite.FieldDefinition.GetValue C# (CSharp) Method

        public object GetValue(object onInstance)
        {
            return this.GetValueFn?.Invoke(onInstance);
        }

        internal static void SetListChildResults <Parent>(List <Parent> parents, ModelDefinition modelDef,
                                                          FieldDefinition fieldDef, Type refType, IList childResults, FieldDefinition refField)
        {
            var           map = new Dictionary <object, List <object> >();
            List <object> refValues;

            foreach (var result in childResults)
            {
                var refValue = refField.GetValue(result);
                if (!map.TryGetValue(refValue, out refValues))
                {
                    map[refValue] = refValues = new List <object>();
                }
                refValues.Add(result);
            }

            var untypedApi = refType.CreateTypedApi();

            foreach (var result in parents)
            {
                var pkValue = modelDef.PrimaryKey.GetValue(result);
                if (map.TryGetValue(pkValue, out refValues))
                {
                    var castResults = untypedApi.Cast(refValues);
                    fieldDef.SetValueFn(result, castResults);
                }
            }
        }