code: def api_client(connection, client_class=xbahn.api.Client):
      
  
      return client_class(
          link=xbahn.connection.link.Link(
              # use the connection receive messages (server responses)
              receive=connection,
              # use the connection to send messages (initiate requests to server)
              send=connection
          )
      )
docs: Establishes an API client for one-way communication
      connection with an API Server
      
      Arguments:
          - connection (xbahn.connection.Connection)
  
      Keyword Arguments:
          - client_class (xbahn.api.Client): if supplied use this class to initantiate
              the client object. If omitted will use xbahn.api.Client.
      
      Returns:
          - client_class: client instance