docs: def get_args_pairs(arguments):
      """
      :param arguments: Python dictionary of TGN API command arguments <key, value>.
      :returns: Tcl list of argument pairs <-key, value> to be used in TGN API commands.
      """
  
      return ' '.join(' '.join(['-' + k, tcl_str(str(v))]) for k, v in arguments.items())