BeaconState State of nearby beacon devices. 
BeaconState.BeaconInfo Information from one beacon. 
HeadphoneState Headphone state. 
TimeIntervals The semantic time intervals for the to the current time and location. 
Weather This interface is deprecated. This method is deprecated as of August 07, 2019, and will be turned off on January 31, 2020. Google does not offer alternate functionality for the Weather contextual signal.  


BeaconState.TypeFilter The type of beacon to match.