code: ServerMember update(Address clientAddress, Instant time) {
      if (clientAddress != null) {
        this.clientAddress = clientAddress;
        if (time.isAfter(updated)) {
          this.updated = Assert.notNull(time, "time");
        }
      }
      return this;
    }
docs: Updates the member client address.
  
  @param clientAddress The member client address.
  @return The member.