docs: public static Map<Integer, Accumulator> getAccumulators(QueryCacheContext context, String mapName, String cacheId) {
          PartitionAccumulatorRegistry partitionAccumulatorRegistry = getAccumulatorRegistryOrNull(context, mapName, cacheId);
          if (partitionAccumulatorRegistry == null) {
              return Collections.emptyMap();
          }
          return partitionAccumulatorRegistry.getAll();
      }