'宣言 ReadOnly Property GroupDescriptions As System.Collections.ObjectModel.ObservableCollection(Of GroupDescription)
System.Collections.ObjectModel.ObservableCollection<GroupDescription> GroupDescriptions {get;}
'宣言 ReadOnly Property GroupDescriptions As System.Collections.ObjectModel.ObservableCollection(Of GroupDescription)
System.Collections.ObjectModel.ObservableCollection<GroupDescription> GroupDescriptions {get;}