Added in API level XE12

Contains classes for general purpose hook-ins to the Glass system and UI.


ContextualMenus Constants used for contextual menus. 
VoiceTriggers Constants for registering Glassware with the main voice menu. 


ContextualMenus.Command List of available contextual menu commands for use within an app. 
VoiceTriggers.Command Represents the list of system voice commands available.