@Override
  public Collection<Address> validatorsInBlock(final BlockHeader header) {
    return CliqueExtraData.decode(header).getValidators();
  }
Create header builder with vote headers.

@param builder the builder
@param vote the vote
@return the block header builder
consensus/clique/src/main/java/org/hyperledger/besu/consensus/clique/CliqueBlockInterface.java