/**
 * Wraps an event that was posted, but which had no subscribers and thus could not be delivered.
 *
 * <p>Registering a DeadEvent subscriber is useful for debugging or logging, as it can detect
 * misconfigurations in a system's event distribution.
 *
 * @author Cliff Biffle
 * @since 10.0
 */
@ElementTypesAreNonnullByDefault
public class DeadEvent {

  private final Object source;
  private final Object event;

                                                .success("%sConfiguration validation of %s: %s")
                                                .build()
                                        : messageBuilderFactory
                                                .builder()
                                                .failure("%sConfiguration validation of %s: %s")
                                                .build(),

                + "    <plugins>\n"
                + "      <plugin>\n"
                + "         <m:configuration xmlns:m=\"http://maven.apache.org/POM/4.0.0\" xmlns=\"http://fabric8.io/fabric8-maven-plugin\">\n"
                + "             <myConfig>foo</myConfig>\n"
                + "         </m:configuration>\n"
                + "      </plugin>\n"
                + "    </plugins>\n"
                + "  </build>\n"