code: def to_pb(self):
          
          intersection = table_v2_pb2.GcRule.Intersection(
              rules=[rule.to_pb() for rule in self.rules]
          )
          return table_v2_pb2.GcRule(intersection=intersection)
docs: Converts the intersection into a single GC rule as a protobuf.
  
          :rtype: :class:`.table_v2_pb2.GcRule`
          :returns: The converted current object.