*/
    static String toSourceHint(Model model) {
        if (model == null) {
            return "";
        }

        StringBuilder buffer = new StringBuilder(128);

        buffer.append(toId(model));

        File pomFile = model.getPomFile();
        if (pomFile != null) {
            buffer.append(" (").append(pomFile).append(')');
        }

        return buffer.toString();
    }

    }

    private String getModelId() {
        return ModelProblemUtils.toId(sourceModel);
    }

    public void setRootModel(Model rootModel) {
        this.rootModel = rootModel;
    }

    public Model getRootModel() {
        return rootModel;
    }

    public String getRootModelId() {
        return ModelProblemUtils.toId(rootModel);
    }

    public void add(ModelProblem problem) {

                message,
                severity,
                version,
                ModelProblemUtils.toPath(source),
                lineNumber,
                columnNumber,
                ModelProblemUtils.toId(source),
                exception);
    }

    /**
     * Creates a new problem with the specified message and exception.
     *
     * @param message The message describing the problem, may be {@code null}.