cmdAndArguments.add(mavenOptions.altProjectSettings().get());
        }
        if (mavenOptions.altInstallationSettings().isPresent()) {
            cmdAndArguments.add("--install-settings");
            cmdAndArguments.add(mavenOptions.altInstallationSettings().get());
        }
        if (mavenOptions.altUserToolchains().isPresent()) {
            cmdAndArguments.add("--toolchains");

    public Optional<String> altProjectSettings() {
        return returnFirstPresentOrEmpty(Options::altProjectSettings);
    }

    @Override
    public Optional<String> altInstallationSettings() {
        return returnFirstPresentOrEmpty(Options::altInstallationSettings);
    }

    @Override
    public Optional<String> altUserToolchains() {
        return returnFirstPresentOrEmpty(Options::altUserToolchains);
    }

    /**
     * Returns the path to an alternate installation settings file.
     *
     * @return an {@link Optional} containing the file path, or empty if not set
     */
    @Nonnull
    Optional<String> altInstallationSettings();

    /**
     * Returns the path to an alternate user toolchains file.
     *
     * @return an {@link Optional} containing the file path, or empty if not set
     */
    @Nonnull

            }
        }

        Path installationSettingsFile = null;

        if (mavenOptions.altInstallationSettings().isPresent()) {
            installationSettingsFile = context.cwdResolver.apply(
                    mavenOptions.altInstallationSettings().get());

            if (!Files.isRegularFile(installationSettingsFile)) {
                throw new FileNotFoundException(

            return Optional.of(commandLine.getOptionValue(CLIManager.ALTERNATE_PROJECT_SETTINGS));
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> altInstallationSettings() {
        if (commandLine.hasOption(CLIManager.ALTERNATE_INSTALLATION_SETTINGS)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.ALTERNATE_INSTALLATION_SETTINGS));
        }