code: @Override
      public LoadState isLoadedWithoutReference(Object paramObject, String paramString)
      {
          return PersistenceUtilHelper.isLoadedWithoutReference(paramObject, paramString, provider.getCache());
      }
docs: If the provider determines that the entity has been provided by itself
  and that the state of the specified attribute has been loaded, this
  method returns LoadState.LOADED. If the provider determines that the
  entity has been provided by itself and that either entity attributes with
  FetchType EAGER have not been loaded or that the state of the specified
  attribute has not been loaded, this methods returns LoadState.NOT_LOADED.
  If a provider cannot determine the load state, this method returns
  LoadState.UNKNOWN. The provider's implementation of this method must not
  obtain a reference to an attribute value, as this could trigger the
  loading of entity state if the entity has been provided by a different
  provider.
  
  @param entity
  @param attributeName
  name of attribute whose load status is to be determined
  @return load status of the attribute