* @return The progress logger for the operation.
     */
    ProgressLogger newOperation(String loggerCategory);

    /**
     * Creates a new long-running operation which has not been started.
     *
     * @param loggerCategory The logger category.
     * @return The progress logger for the operation.
     */
    ProgressLogger newOperation(Class<?> loggerCategory);

    /**

        buildOperationListener.started(descriptor, new OperationStartEvent(operationState.getStartTime()));
        ProgressLogger progressLogger = progressLoggerFactory.newOperation(DefaultBuildOperationRunner.class, descriptor);
        this.progressLogger = progressLogger.start(descriptor.getDisplayName(), descriptor.getProgressDisplayName());
    }

    @Override