/// <summary>
/// Array sort function used by `sort()` to re-sort the models in the list.
/// </summary>
protected Y_.DataType_.Number _sort(Model a, Model b){return null;}
/// <summary>
/// Removes the specified _model_ if it's in this list.
/// </summary>
protected Model _remove(Model model){return null;}
/// <summary>
/// Removes the specified _model_ if it's in this list.
/// </summary>
protected Model _remove(Model model, object options){return null;}
/// <summary>
/// Returns the index at which the given _model_ should be inserted to maintain
/// the sort order of the list.
/// </summary>
protected Y_.DataType_.Number _findIndex(Model model){return null;}
/// <summary>
/// Removes this list as a bubble target for the specified model's events.
/// </summary>
protected void _detachList(Model model){}
/// <summary>
/// Adds this list as a bubble target for the specified model's events.
/// </summary>
protected void _attachList(Model model){}
/// <summary>
/// Define this method to provide a function that takes a model as a parameter
/// and returns a value by which that model should be sorted relative to other
/// models in this list.
/// By default, no comparator is defined, meaning that models will not be sorted
/// (they'll be stored in the order they're added).
/// </summary>
public Y_.DataType_.Number comparator(Model model){return null;}
/// <summary>
/// Replacement `comparator` for the `data` ModelList that defers sorting logic
/// to the `_compare` method. The deferral is accomplished by returning `this`.
/// </summary>
protected Model _sortComparator(Model item){return null;}
