<Tree
  paddingLeft={20}                   // left padding for children nodes in pixels
  tree={this.state.tree}             // tree object
  onChange={this.handleChange}       // onChange(tree) tree object changed
  onNodeDragged={this.onNodeDragged} // onNodeDragged(draggedNode, draggedNodeParent} tree objects (subtrees of main tree)
  renderNode={this.renderNode}       // renderNode(node) return react element
/>

// a sample tree object
// node.children, node.collapsed, node.leaf properties are hardcoded
{
  "module": "react-ui-tree",
  "children": [{
    "collapsed": true,
    "module": "dist",
    "children": [{
      "module": "node.js"
    }]
  }]
}