@Override
  public Collection<Address> getValidatorsForBlock(final BlockHeader header) {
    return blockInterface.validatorsInBlock(header).stream().sorted().collect(Collectors.toList());
  }
Non forking validator provider block validator provider.

@param blockchain the blockchain
@param epochManager the epoch manager
@param blockInterface the block interface
@return the block validator provider
consensus/common/src/main/java/org/hyperledger/besu/consensus/common/validator/blockbased/BlockValidatorProvider.java