@interface PLInstrumentedBlockOperation : NSBlockOperation @property (nonatomic) double creationTime; @property (nonatomic) double executionStartTime; @property (nonatomic) double executionEndTime; @property (nonatomic) BOOL postambleAdded; @property (readonly, nonatomic) double timeSpentWaitingInQueue; @property (readonly, nonatomic) double executionTime; + (id)blockOperationWithBlock:(id /* block */)a0; - (id)init; - (void)addExecutionBlock:(id /* block */)a0; - (id)description; - (double)executionTime; - (double)timeSpentWaitingInQueue; @end