<groupId>commons-jxpath</groupId>
      <artifactId>commons-jxpath</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.xmlunit</groupId>
      <artifactId>xmlunit-assertj</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-testing</artifactId>
      <scope>test</scope>
    </dependency>

    }

    // ----------------------------------------------------------------------
    // Field validation
    // ----------------------------------------------------------------------

    /**
     * Asserts:
     * <p/>
     * <ul>
     * <li><code>string.length == null</code>
     * <li><code>string.length == 0</code>
     * </ul>
     */
    private static boolean validateStringEmpty(

            String string,
            InputLocationTracker tracker) {
        return validateStringNotEmpty(EMPTY, fieldName, problems, severity, version, string, null, tracker);
    }

    /**
     * Asserts:
     * <p/>
     * <ul>
     * <li><code>string != null</code>
     * <li><code>string.length > 0</code>
     * </ul>
     */
    @SuppressWarnings("checkstyle:parameternumber")

    }

    /**
     * Success with warnings
     *
     * @param model
     * @param problems
     */
    public static <T> Result<T> success(T model, Iterable<? extends ModelProblem> problems) {
        assert !hasErrors(problems);
        return new Result<>(false, model, problems);
    }

    /**
     * Success with warnings
     *
     * @param model
     * @param results
     */