Defines a column whose cells show an expander to reveal nested data.
public interface IExpanderColumn<TModel> : IColumn<TModel>, IColumn, INotifyPropertyChanged
kind:method, kind:property, kind:ctor. Press Esc to clear.GetChildModels(TModel)Gets the child models which represent the nested data for this column.HasChildren(TModel)Gets a value indicating whether the column has nested data.SetModelIsExpanded(IExpanderRow<TModel>)Called by an IExpanderRow<TModel> to write its IsExpanded state to the underlying model.