interface PermissionHandler
The interface that defines the handler of user permissions
| interface PermissionCallbackCallback interface to get information about permission status. | 
| abstract fun askForNotGrantedPermissions(): Unitabstract fun askForNotGrantedPermissions(callback: PermissionHandler.PermissionCallback!): UnitPerform action to ask a user for not granted permissions. | 
| open class AppPermissionHandler : PermissionHandlerThe default Application permission handler. |