@Override
  public Optional<VoteProvider> getVoteProviderAfterBlock(final BlockHeader header) {
    return resolveValidatorProvider(header.getNumber() + 1).getVoteProviderAtHead();
  }
Instantiates a new Forking validator provider.

@param blockchain the blockchain
@param forksSchedule the forks schedule
@param blockValidatorProvider the block validator provider
@param transactionValidatorProvider the transaction validator provider
consensus/qbft/src/main/java/org/hyperledger/besu/consensus/qbft/validator/ForkingValidatorProvider.java