*
 * @since 2.1
 */
public interface CancellationToken {
    /**
     * Gets whether cancellation has been requested for this token.
     * @return Cancellation status.
     */
    boolean isCancellationRequested();

        throws BuildExceptionVersion1, InternalUnsupportedModelException {
        assertCanQuery();
        if (cancellationToken.isCancellationRequested()) {
            throw new BuildCancelledException(String.format("Could not build '%s' model. Build cancelled.", modelIdentifier.getName()));
        }

                } else {
                    return BuildActionResult.of(payloadSerializer.serialize(result.getClientResult()));
                }
            }
            if (requestContext.getCancellationToken().isCancellationRequested()) {
                return BuildActionResult.cancelled(payloadSerializer.serialize(result.getBuildFailure()));
            }

        } finally {
            stopped = true;
            lock.unlock();
        }
    }

    private void requestCancellation() {
        if (cancellationToken != null && !cancellationToken.isCancellationRequested()) {
            cancellationToken.cancel();
        }
    }

    private void sendStopWhenIdleMessageToDaemons() {