apache-rat-plugin/src/main/java/org/apache/rat/mp/AbstractRatMojo.java [324:344]:
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    protected List<String> getValues(final Arg arg) {
        List<String> result = new ArrayList<>();
        for (Option option : arg.group().getOptions()) {
            if (option.getLongOpt() != null) {
                List<String> args = getArg(option.getLongOpt());
                if (args != null) {
                    result.addAll(args);
                }
            }
        }
        return result;
    }

    /**
     * Removes all values for an Arg.
     * @param arg The arg to remove values for.
     */
    protected void removeKey(final Arg arg) {
        for (Option option : arg.group().getOptions()) {
            if (option.getLongOpt() != null) {
                removeArg(option.getLongOpt());
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apache-rat-tasks/src/main/java/org/apache/rat/anttasks/Report.java [379:400]:
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    protected List<String> getValues(final Arg arg) {
        List<String> result = new ArrayList<>();
        for (Option option : arg.group().getOptions()) {
            if (option.getLongOpt() != null) {
                List<String> args = getArg(option.getLongOpt());
                if (args != null) {
                    result.addAll(args);
                }
            }
        }
        return result;
    }

    /**
     * Removes the values for the arg.
     *
     * @param arg the arg to remove the values for.
     */
    protected void removeKey(final Arg arg) {
        for (Option option : arg.group().getOptions()) {
            if (option.getLongOpt() != null) {
                removeArg(option.getLongOpt());
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