code: function(nodes) {
          for (var i = 0; i < nodes.length; i++) {
              if (nodes[i] instanceof RiakNode) {
                  this.nodes.push(nodes[i]);
              }
          }
          return this;
      }
docs: The RiakNodes to use.
  @method withRiakNodes
  @param {RiakNode[]} nodes array of (unstarted) {{#crossLink "RiakNode"}}{{/crossLink}} instances.
  @return {RiakCluster.Builder}