internal CheckItem(IJsonCheckItem json, string checkListId, TrelloAuthorization auth = null)
{
Id = json.Id;
_context = new CheckItemContext(Id, checkListId, auth);
_context.Synchronized += Synchronized;
_checkList = new Field <CheckList>(_context, nameof(CheckList));
_checkList.AddRule(NotNullRule <CheckList> .Instance);
_name = new Field <string>(_context, nameof(Name));
_name.AddRule(NotNullOrWhiteSpaceRule.Instance);
_position = new Field <Position>(_context, nameof(Position));
_position.AddRule(NotNullRule <Position> .Instance);
_position.AddRule(PositionRule.Instance);
_state = new Field <CheckItemState?>(_context, nameof(State));
_state.AddRule(NullableHasValueRule <CheckItemState> .Instance);
_state.AddRule(EnumerationRule <CheckItemState?> .Instance);
TrelloConfiguration.Cache.Add(this);
_context.Merge(json);
}