@Override
  public Collection<Address> getValidatorsAtHead() {
    final BlockHeader chainHead = blockchain.getChainHeadHeader();
    return getValidatorsAfterBlock(chainHead);
  }
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