docs: def get_perm(perm_id,**kwargs):
      """
          Get all permissions
      """
  
      try:
          perm = db.DBSession.query(Perm).filter(Perm.id==perm_id).one()
          return perm
      except NoResultFound:
          raise ResourceNotFoundError("Permission not found (perm_id={})".format(perm_id))