protected ResourceInformationProvider getResourceInformationProvider(PropertiesProvider propertiesProvider) {
        if (resourceInformationProvider == null) {
            resourceInformationProvider = new JpaResourceInformationProvider(propertiesProvider);
        }
        return resourceInformationProvider;
    }
protected ResourceInformationProvider getResourceInformationProvider ( PropertiesProvider propertiesProvider ) { if ( resourceInformationProvider == null ) { resourceInformationProvider = new JpaResourceInformationProvider ( propertiesProvider ) ; } return resourceInformationProvider ; }
@return ResourceInformationProvider used to describe JPA classes.