public String getClientId() {
    return clientId;
  }
Encapsulates information about a peer, including their protocol version, client ID, capabilities
and other.

<p>The peer info is shared between peers during the <code>HELLO</code> wire protocol handshake.
ethereum/p2p/src/main/java/org/hyperledger/besu/ethereum/p2p/rlpx/wire/PeerInfo.java