docs: def get_limits_for_pool(self, pool):
          """
          meterer.get_limits_for_pool(pool) -> dict
  
          Returns the limits for the given pool. If the pool does not have limits
          set, {} is returned.
  
          The resulting dict has the following format. Each item is optional and
          indicates no limit for the specified time period.
          {
              "year": int,
              "month": int,
              "week": int,
              "day": int,
              "hour": int,
          }
          """
          pool_limits = self.cache.get("LIMIT:%s" % pool)
          if pool_limits is None:
              return {}
  
          return json_loads(pool_limits)