delOverlaysOfOwnerB :: R.YiString -> BufferM ()
delOverlaysOfOwnerB owner =
  modifyBuffer $ delOverlaysOfOwnerBI owner
delOverlaysOfOwnerB :: R.YiString -> BufferM ()
delOverlaysOfOwnerB owner =
  modifyBuffer $ delOverlaysOfOwnerBI owner
delOverlaysOfOwnerB owner =
  modifyBuffer $ delOverlaysOfOwnerBI owner