@property<EOL><INDENT>def device_id(self):<DEDENT>
if self._device_id is None:<EOL><INDENT>self._device_id = "<STR_LIT>".join(<EOL>random.choice("<STR_LIT>") for _ in range(<NUM_LIT:50>))<EOL><DEDENT>return self._device_id<EOL>
Randomly generated deviceId.
:return: