if (relocation.target == SENTINEL) {
                    String message = "The artifact " + original + " has been banned from resolution: "
                            + (relocation.global ? "User global ban" : "User project ban");
                    LOGGER.debug(message);
                    throw new ArtifactDescriptorException(artifactDescriptorResult, message);
                }
                Artifact result = new RelocatedArtifact(

            // continue the build
        } else if (MavenExecutionRequest.REACTOR_FAIL_AT_END.equals(rootSession.getReactorFailureBehavior())) {
            // continue the build but ban all projects that depend on the failed one
            buildContext.getReactorBuildStatus().blackList(mavenProject);
        } else if (MavenExecutionRequest.REACTOR_FAIL_FAST.equals(rootSession.getReactorFailureBehavior())) {

    public SortedSet<E> create(Object... elements) {
      List<?> normalValues = (List<?>) asList(elements);
      List<E> extremeValues = new ArrayList<>();

      // nulls are usually out of bounds for a subset, so ban them altogether
      for (Object o : elements) {
        if (o == null) {
          throw new NullPointerException();
        }
      }

      // prepare extreme values to be filtered out of view

                // continue the build
            } else if (MavenExecutionRequest.REACTOR_FAIL_AT_END.equals(session.getReactorFailureBehavior())) {
                // continue the build but ban all projects that depend on the failed one
                buildContext.getReactorBuildStatus().blackList(mavenProject);
            } else if (MavenExecutionRequest.REACTOR_FAIL_FAST.equals(session.getReactorFailureBehavior())) {