docstr: This function is called when Fiber wants to listen on a local
  address for incoming connection. It is currently used by Popen
  and Queue.
docstr_tok: ["This","function","is","called","when","Fiber","wants","to","listen","on","a","local","address","for","incoming","connection",".","It","is","currently","used","by","Popen","and","Queue","."]
code: def get_listen_addr(self):
      """This function is called when Fiber wants to listen on a local
      address for incoming connection. It is currently used by Popen
      and Queue."""
      raise NotImplementedError
  
imports: import enum
label_desc: Use image node_id 7 for calling the Backend obj's underlying member method code with example usage: obj.get_listen_addr() without return types