private final String bannedPrefix;

    private final String newPrefix;

    private final ModelProblemCollector problems;

    ProblemDetectingValueSource(
            ValueSource valueSource, String bannedPrefix, String newPrefix, ModelProblemCollector problems) {
        this.valueSource = valueSource;
        this.bannedPrefix = bannedPrefix;
        this.newPrefix = newPrefix;
        this.problems = problems;
    }

    @Override