docs: def increase_fcp_usage(self, fcp, assigner_id=None):
          """Incrase fcp usage of given fcp
  
          Returns True if it's a new fcp, otherwise return False
          """
          # TODO: check assigner_id to make sure on the correct fcp record
          connections = self.db.get_connections_from_assigner(assigner_id)
          new = False
  
          if connections == 0:
              self.db.assign(fcp, assigner_id)
              new = True
          else:
              self.db.increase_usage(fcp)
  
          return new