Annotation[] annotations = clazz.getAnnotations();
for (Annotation annotation : annotations) {
if (annotation instanceof Conversion) {
Conversion conversion = (Conversion) annotation;
for (TypeConversion tc : conversion.conversions()) {
if (mapping.containsKey(tc.key())) {
break;
}
if (LOG.isDebugEnabled()) {
if (StringUtils.isEmpty(tc.key())) {