docs: public ListHandshakesForOrganizationResult withHandshakes(Handshake... handshakes) {
          if (this.handshakes == null) {
              setHandshakes(new java.util.ArrayList<Handshake>(handshakes.length));
          }
          for (Handshake ele : handshakes) {
              this.handshakes.add(ele);
          }
          return this;
      }