public Set<JavaType> getPersistentFieldTypes(
      final JavaType thisType, final PersistenceMemberLocator persistenceMemberLocator) {
    final MethodMetadata identifierAccessor =
        persistenceMemberLocator.getIdentifierAccessor(thisType);
    final MethodMetadata versionAccessor = persistenceMemberLocator.getVersionAccessor(thisType);

    final Set<JavaType> fieldTypes = new LinkedHashSet<JavaType>();
    for (final MethodMetadata method : getMethods()) {
      // Not interested in non-accessor methods or persistence identifiers
      // and version fields
      if (!BeanInfoUtils.isAccessorMethod(method)
          || method.hasSameName(identifierAccessor, versionAccessor)) {
        continue;
      }

      // Not interested in fields that are JPA transient fields or
      // immutable fields
      final FieldMetadata field = BeanInfoUtils.getFieldForJavaBeanMethod(this, method);
      if (field == null
          || field.getCustomData().keySet().contains(CustomDataKeys.TRANSIENT_FIELD)
          || !BeanInfoUtils.hasAccessorAndMutator(field, this)) {
        continue;
      }
      final JavaType returnType = method.getReturnType();
      if (returnType.isCommonCollectionType()) {
        for (final JavaType genericType : returnType.getParameters()) {
          fieldTypes.add(genericType);
        }
      } else {
        if (!field.getCustomData().keySet().contains(EMBEDDED_FIELD)) {
          fieldTypes.add(returnType);
        }
      }
    }
    return fieldTypes;
  }