code: def devices(opts=[]):
      
      adb_full_cmd = [v.ADB_COMMAND_PREFIX, v.ADB_COMMAND_DEVICES, _convert_opts(opts)]
      return _exec_command(adb_full_cmd)
docs: Get list of all available devices including emulators
      :param opts: list command options (e.g. ["-r", "-a"])
      :return: result of _exec_command() execution