Class android.app.appsearch.GlobalSearchSession

Added Methods
void addObserver(String, ObserverSpec, Executor, AppSearchObserverCallback)  
void getByDocumentId(String, String, GetByDocumentIdRequest, Executor, BatchResultCallback<String, GenericDocument>)  
void getSchema(String, String, Executor, Consumer<AppSearchResult<GetSchemaResponse>>)  
void removeObserver(String, AppSearchObserverCallback)