public static String getMappedParentFieldKey(Object destObj, FieldMap destFieldMap) {
        StringBuilder buf = new StringBuilder(100); // TODO Use IdentityHashMap instead of String concatenation
        buf.append(System.identityHashCode(destObj));
        buf.append(destFieldMap.getDestFieldName());
        if (destFieldMap.getDestFieldKey() != null) {
            buf.append("[").append(destFieldMap.getDestFieldKey()).append("]");
        }
        return buf.toString();
    }
Internal class that provides various mapping utilities used throughout the code base. Only intended for internal use.
core/src/main/java/com/github/dozermapper/core/util/MappingUtils.java