*
     * @return the problems that were encountered during the project building, can be empty but never {@code null}
     */
    @Nonnull
    List<ModelProblem> getProblems();

    /**
     * Creates a human readable representation of these errors.
     */
    String toString();

        if (logger.isDebugEnabled()) {
            logger.debug("  (f) " + fieldName + " = " + toString(value));
        }
    }

    /**
     * Creates a human-friendly string representation of the specified object.
     *
     * @param obj The object to create a string representation for, may be <code>null</code>.
     * @return The string representation, never <code>null</code>.