[TArray](API\Runtime\Core\Containers\TArray)< [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) > ImportFromHierarchyContainer ( const [FRigHierarchyContainer](API\Plugins\ControlRig\Rigs\FRigHierarchyContainer) & InContainer, bool bIsCopyAndPaste )