public MembershipQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
 }
 public UserQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
 }
 protected BaseQueryFilterController(Field field, FilterOperator? filterOperator)
 {
     Field = field;
     FilterOperator = filterOperator;
 }
 public DropdownQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
 }
 public DateTimeQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
     _dateOnly = ((FieldDateTime)field).DateOnly;
 }
 public ContentTypeIdQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
 }
 public ChoiceQueryFilterController(Field field, FilterOperator? filterOperator)
     : base(field, filterOperator)
 {
     _choices = ((FieldChoice)field).Choices.OrderBy(c => c).ToArray();
 }