} else if (nodeStrList.size() > 1) {
                    buf.append(getResultDataBody(entry.getKey(), nodeStrList));
                }
            }
            buf.append(getAdditionalData(responseData, doc));
            buf.append(getResultDataFooter());

            final ResultData resultData = new ResultData();
            resultData.setTransformerName(getName());

        this.details = problem.getDetails();
        this.docLink = problem.getDefinition().getDocumentationLink();
        this.exception = problem.getException();
        this.additionalData = problem.getAdditionalData();
        this.problemStream = null;
    }

    public DefaultProblemBuilder(ProblemStream problemStream) {
        this.problemStream = problemStream;
        this.solutions = new ArrayList<String>();

                toInternalLocations(problem.getLocations()),
                toInternalSolutions(problem.getSolutions()),
                toInternalAdditionalData(problem.getAdditionalData()),
                toInternalFailure(problem.getException())
            )
        );
    }

    @Nullable
    private static InternalFailure toInternalFailure(@Nullable RuntimeException ex) {

        }
        assert location != null : "Expected a location of type $locationType, but found none."
        return locationType.cast(location)
    }

    @Override
    ReceivedAdditionalData getAdditionalData() {
       additionalData
    }

    @Override
    ReceivedException getException() {
        exception
    }

    @Override
    InternalProblemBuilder toBuilder() {