code: function add_ops_to_dicts() {
              fetch_dict[undefined] = store.perform_default_fetch;
              for (const key of Object.keys(state)) {
                  fetch_dict[key] = store.perform_key_fetch;
                  mutate_dict[key] = store.perform_key_mutation;
              }
              if (operations && operations.fetch) {
                  for (const key of Object.keys(operations.fetch)) {
                      if (fetch_dict[key]) {
                          throw_error([
                              'cannot name an operation the same thing',
                              'as a key in state',
                          ]);
                      }
                      fetch_dict[key] = operations.fetch[key];
                  }
              }
              if (operations && operations.mutate) {
                  for (const key of Object.keys(operations.mutate)) {
                      if (mutate_dict[key]) {
                          throw_error([
                              'cannot name an operation the same thing',
                              'as a key in state',
                          ]);
                      }
                      mutate_dict[key] = operations.mutate[key];
                  }
              }
              return true;
          }
docs: -----------