public String createKey(Class<?> srcClass, Class<?> destClass, String mapId) {
        Class<?> srcRealClass = MappingUtils.getRealClass(srcClass, beanContainer);
        Class<?> destRealClass = MappingUtils.getRealClass(destClass, beanContainer);

        StringBuilder result = new StringBuilder(140);
        result.append("SRC-CLASS->");
        result.append(srcRealClass.getName());
        result.append(" DST-CLASS->");
        result.append(destRealClass.getName());
        if (StringUtils.isNotEmpty(mapId)) {
            result.append(" MAP-ID->");
            result.append(mapId);
        }
        return result.toString();
    }
Internal class that generates a unique class mapping key. Only intended for internal use.
core/src/main/java/com/github/dozermapper/core/classmap/ClassMapKeyFactory.java