}
        if (FAIL_FAST.equals(failureBehavior)
                || FAIL_AT_END.equals(failureBehavior)
                || FAIL_NEVER.equals(failureBehavior)) {
            this.failureBehavior = failureBehavior;
        } else {
            throw new IllegalArgumentException("Invalid failure behavior (must be one of: '" + FAIL_FAST + "', '"
                    + FAIL_AT_END + "', '" + FAIL_NEVER + "').");
        }
    }

    // Reactor Failure Mode
    // ----------------------------------------------------------------------

    String REACTOR_FAIL_FAST = "FAIL_FAST";

    String REACTOR_FAIL_AT_END = "FAIL_AT_END";

    String REACTOR_FAIL_NEVER = "FAIL_NEVER";

    // ----------------------------------------------------------------------
    // Reactor Make Mode

        } else if (MavenExecutionRequest.REACTOR_FAIL_NEVER.equals(rootSession.getReactorFailureBehavior())) {
            // 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);