171 pub struct Operation {  struct
174     km_op: Strong<dyn IKeyMintOperation>,  argument
175     last_usage: Mutex<Instant>,
176     outcome: Mutex<Outcome>,
177     owner: u32, // Uid of the operation's owner.
178     auth_info: Mutex<AuthInfo>,
179     forced: bool,
180     logging_info: LoggingInfo,
214 impl Operation {  implementation
454 impl Drop for Operation {  implementation
500     ) -> Arc<Operation> {  in create_operation()
538     fn get(&self, index: usize) -> Option<Arc<Operation>> {  in get()