static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FIKRigSolverStackDragDropOp](API\Plugins\IKRigEditor\RigEditor\FIKRigSolverStackDragDropOp) > New ( [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [FSolverStackElement](API\Plugins\IKRigEditor\RigEditor\FSolverStackElement) > InElement )