code: def from_map(map):
          
          skip = map.get_as_nullable_integer("skip")
          take = map.get_as_nullable_integer("take")
          total = map.get_as_nullable_boolean("total")
          return PagingParams(skip, take, total)
docs: Creates a new PagingParams and sets it parameters from the specified map
  
          :param map: a AnyValueMap or StringValueMap to initialize this PagingParams
  
          :return: a newly created PagingParams.