code: def read_catalog_info_yaml(self, splitkey):
          
          catalog_info_yaml = self._name_factory.catalog_split_yaml(sourcekey=splitkey,
                                                                    fullpath=True)
          yaml_dict = yaml.safe_load(open(catalog_info_yaml))
          # resolve env vars
          yaml_dict['catalog_file'] = os.path.expandvars(yaml_dict['catalog_file'])
          yaml_dict['catalog_extdir'] = os.path.expandvars(yaml_dict['catalog_extdir'])
          return yaml_dict
docs: Read the yaml file for a particular split key