return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> failFast() {
        if (commandLine.hasOption(CLIManager.FAIL_FAST)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> failAtEnd() {

    @Deprecated
    public static final String ALTERNATE_GLOBAL_TOOLCHAINS = "gt";

    public static final String ALTERNATE_INSTALLATION_TOOLCHAINS = "it";

    public static final String FAIL_FAST = "ff";

    public static final String FAIL_ON_SEVERITY = "fos";

    public static final String FAIL_AT_END = "fae";

    public static final String FAIL_NEVER = "fn";

         * based on the reactor failure behavior.
         * <p>
         * This method works in conjunction with the filtering in executePlan():
         * - For FAIL_FAST: Sets ReactorBuildStatus to halted, which causes executePlan to only process after:* steps
         * - For FAIL_AT_END: Blacklists the project and its dependents, which causes executePlan to skip them

        } else {
            return executionListener;
        }
    }

    private String determineReactorFailureBehaviour(final CommandLine commandLine) {
        if (commandLine.hasOption(CLIManager.FAIL_FAST)) {
            return MavenExecutionRequest.REACTOR_FAIL_FAST;
        } else if (commandLine.hasOption(CLIManager.FAIL_AT_END)) {
            return MavenExecutionRequest.REACTOR_FAIL_AT_END;