code: def get_resources(cls):
          
          plural_mappings = resource_helper.build_plural_mappings(
              {}, RESOURCE_ATTRIBUTE_MAP)
          if NEUTRON_VERSION.version[0] <= NEUTRON_NEWTON_VERSION.version[0]:
              attr.PLURALS.update(plural_mappings)
          return resource_helper.build_resource_info(plural_mappings,
                                                     RESOURCE_ATTRIBUTE_MAP,
                                                     bc.constants.L3)
docs: Returns Ext Resources.