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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _GetSubFlowNetworkLimit(self):
 """Get current network limit for subflows."""


    subflow_network_limit = None

    if self.runner_args.per_client_network_limit_bytes:
      subflow_network_limit = self.runner_args.per_client_network_limit_bytes

    if self.runner_args.network_bytes_limit:
      remaining_network_quota = (
          self.runner_args.network_bytes_limit -
          self.context.network_bytes_sent)
      if subflow_network_limit is None:
        subflow_network_limit = remaining_network_quota
      else:
        subflow_network_limit = min(subflow_network_limit,
                                    remaining_network_quota)

    return subflow_network_limit