Cannot figure out: AttributeError: 'NewLightComponents' object has no attribute 'async_device_update'

I’m working on the new light device and after implementing new component (closely looking at mystrom implementation) I’m getting such error during set up:

2018-07-23 22:12:33 ERROR (MainThread) [homeassistant.components.light] wlightboxs: Error on device update!
Traceback (most recent call last):
  File "/Users/zen/projects/HomeAutomation/home-assistant/homeassistant/helpers/", line 248, in _async_add_entity
    await entity.async_device_update(warning=False)
AttributeError: 'wLightBoxS' object has no attribute 'async_device_update'

My component code is here:

Supporting library:

I didn’t implement any async functions, so it’s quite cryptic for me.

hass version 0.75.0.dev0

I would appreciate any hints how to fix that.

Any devs looking here? If not, what’s the best wy to talk to them?

Any chance you have figured it out by now? I’m just running into the same error and can’t find the reason…

Update: Never mind, found it.
In case anyone in the same situation stumbles across this abandoned topic here is the solution:
I had to remove the “true” attribute from add_devices() call in the setup_platform() definition.