code: function parse_command_interface(callback) {
      return function(error, stdout, stderr) {
          if (error) {
              callback(error);
          } else {
              var output = parse_command_block(stdout.trim());
              if (output.result === 'FAIL') {
                  callback(new Error(output.result));
              } else {
                  callback(error, parse_command_block(stdout.trim()));
              }
          }
      };
  }
docs: Parses the result for a wpa command over an interface.
  
  @private
  @static
  @category wpa_cli
  @param {function} callback The callback function.