@Override
  public String toString() {
    return MoreObjects.toStringHelper(this)
        .add("roundIdentifier", roundIdentifier)
        .add("proposedBlock", proposedBlock)
        .toString();
  }
Gets proposed block.

@return the proposed block
consensus/qbft-core/src/main/java/org/hyperledger/besu/consensus/qbft/core/payload/ProposalPayload.java