offences: {
      /**
       * A vector of reports of the same kind that happened at the same time slot.
       **/
      concurrentReportsIndex: AugmentedQuery<ApiType, (arg1: U8aFixed | string | Uint8Array, arg2: Bytes | string | Uint8Array) => Observable<Vec<H256>>, [U8aFixed, Bytes]> & QueryableStorageEntry<ApiType, [U8aFixed, Bytes]>;