public Optional<Boolean> alsoMake() {
        return returnFirstPresentOrEmpty(MavenOptions::alsoMake);
    }

    @Override
    public Optional<Boolean> alsoMakeDependents() {
        return returnFirstPresentOrEmpty(MavenOptions::alsoMakeDependents);
    }

    @Override
    public Optional<String> threads() {
        return returnFirstPresentOrEmpty(MavenOptions::threads);
    }

    @Override

        if (mavenOptions.alsoMake().isPresent()
                && mavenOptions.alsoMakeDependents().isEmpty()) {
            return MavenExecutionRequest.REACTOR_MAKE_UPSTREAM;
        } else if (mavenOptions.alsoMake().isEmpty()
                && mavenOptions.alsoMakeDependents().isPresent()) {
            return MavenExecutionRequest.REACTOR_MAKE_DOWNSTREAM;

        }
        if (mavenOptions.alsoMake().orElse(false)) {
            cmdAndArguments.add("--also-make");
        }
        if (mavenOptions.alsoMakeDependents().orElse(false)) {
            cmdAndArguments.add("--also-make-dependents");
        }
        if (mavenOptions.threads().isPresent()) {
            cmdAndArguments.add("--threads");

     *
     * @return an {@link Optional} containing true if dependents should also be built, false if not, or empty if not specified
     */
    @Nonnull
    Optional<Boolean> alsoMakeDependents();

    /**
     * Returns the number of threads used for parallel builds.
     *
     * @return an {@link Optional} containing the number of threads (or "1C" for one thread per CPU core), or empty if not specified

        if (commandLine.hasOption(CLIManager.ALSO_MAKE)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

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

    @Override