code: public Cluster withNodes(Node... nodes) {
          if (this.nodes == null) {
              setNodes(new java.util.ArrayList<Node>(nodes.length));
          }
          for (Node ele : nodes) {
              this.nodes.add(ele);
          }
          return this;
      }
docs: <p>
  A list of nodes that are currently in the cluster.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setNodes(java.util.Collection)} or {@link #withNodes(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param nodes
  A list of nodes that are currently in the cluster.
  @return Returns a reference to this object so that method calls can be chained together.