This property returns true if the RibbonTabItem that contains the RibbonGroup belongs to a ContextualTabGroup. When true, the ContextualTabGroup property may be used to access the containing ContextualTabGroup instance.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2