formatUnselectable(assessedCandidate, formatter, describer);
        return formatter.toString();
    }

    private void formatUnselectable(
        AssessedCandidate assessedCandidate,
        TreeFormatter formatter,
        AttributeDescriber describer
    ) {

        formatter.startChildren();
        for (ResolutionCandidateAssessor.AssessedCandidate assessedCandidate : ambiguousVariants.values()) {
            formatUnselectable(assessedCandidate, formatter, failure.getTargetComponentId(), describer);
        }
        formatter.endChildren();

        return formatter.toString();
    }