code: def do_get_config(self, line):
          
  
          def f(p, args):
              try:
                  source = args[0]
              except:
                  print("argument error")
                  return
              print(p.get_config(source))
  
          self._request(line, f)
docs: get_config <peer> <source>
          eg. get_config sw1 startup