'宣言 Public Function GetChildren( _ ByVal position As IPosition(Of TKey,TSortKey), _ ByVal positionItemIndex As Integer _ ) As IEnumerable(Of PositionItemInfo(Of TKey,TSortKey))
public IEnumerable<PositionItemInfo<TKey,TSortKey>> GetChildren( IPosition<TKey,TSortKey> position, int positionItemIndex )