docs: def generate_config(conf):
      """
      Generates a configuration file using the ConfigParser library that
      can be saved to a file for subsequent reads
      """
  
      c = {}
      def to_key(key, default):
          if conf.get(key):
              c[key] = '{} = {}'.format(key, conf.get(key))
          else:
              c[key] = default
  
      to_key('username', '# username = u1234...')
      to_key('password', '# password = secret...')
      to_key('from', '# from = elkme')
      to_key('to', '# to = +46700000000')
      return (True, c)