Feature Request: Rig Retarget Otherside Automatic

I was just wondering if its possible, when Set up Rig for retarget to copy the assigned bone target done in one side of the body, to the other side aumatically, its always the same name with a L o R, so maybe wound not be too complicated to add a new button that does that automatically. For example finger_index_01.Left assigned then user press a button and then finger_example_index_01.Right gets in place automatically