IGeometrySelector::SupportsSleep

The SelectionManager will call [SupportsSleep()](API\Plugins\ModelingComponents\Selection\IGeometrySelector\SupportsSleep) to determine if an [IGeometrySelector](API\Plugins\ModelingComponents\Selection\IGeometrySelector) needs to be destroyed when the target object is deselected, or if it can be re-used (generally more efficient)