final Options options = new Options();
        options.addOption(Option.builder(CLIManager.PROJECT_LIST).hasArg().build());

        ProjectActivation activation;

        activation = new ProjectActivation();
        performProjectActivation(
                parser.parse(options, new String[] {"-pl", "test1,+test2,?test3,+?test4"}), activation);

            boolean parameterRecursive) {
        // Given
        ProjectActivation projectActivation = new ProjectActivation();
        parameterActiveRequiredProjects.forEach(projectActivation::activateRequiredProject);
        parameterActiveOptionalProjects.forEach(projectActivation::activateOptionalProject);
        parameterInactiveRequiredProjects.forEach(projectActivation::deactivateRequiredProject);

            return MavenExecutionRequest.REACTOR_MAKE_BOTH;
        } else {
            return null;
        }
    }

    protected void performProjectActivation(MavenContext context, ProjectActivation projectActivation) {
        if (context.options().projects().isPresent()
                && !context.options().projects().get().isEmpty()) {
            List<String> optionValues = context.options().projects().get();

        }
        return current.isFile() ? current : null;
    }

    // Visible for testing
    static void performProjectActivation(final CommandLine commandLine, final ProjectActivation projectActivation) {
        if (commandLine.hasOption(CLIManager.PROJECT_LIST)) {
            final String[] optionValues = commandLine.getOptionValues(CLIManager.PROJECT_LIST);