public Task RemoveForkCacheAsync(List <BlockIndex> blockIndexes)
 {
     _readCostStrategy.RemoveForkCache(blockIndexes);
     _writeCostStrategy.RemoveForkCache(blockIndexes);
     _storageCostStrategy.RemoveForkCache(blockIndexes);
     _trafficCostStrategy.RemoveForkCache(blockIndexes);
     _txCostStrategy.RemoveForkCache(blockIndexes);
     return(Task.CompletedTask);
 }