code: function mixedRenderer(model, propsOrClassName, props, ...children) {
    if (model && typeof model === 'object') {
      if (typeof propsOrClassName === 'string') {
        propsOrClassName = { className: propsOrClassName }
        props = props || {}
        props = { ...props, ...propsOrClassName }
      }
      else {
        children = [props].concat(children)
        props = propsOrClassName
      }
      return r.apply(this, [model, props, ...children])
    }
    return h.apply(this, arguments)
  }
docs: `React.createElement` 是不能渲染一个 ViewModel 实例的，于是便提供了渲染方法来渲染 vm。
  
  即可以 render ViewModel 也可以 render React Component
  r -> model, props = {}, ...children
  h -> tagOrComp, classNameOrProps, props = undefined, ...content
   
  
  可以渲染 Vm 实例的方法，类似于 `React.createElement`
  @name h
  @public
  @param {VmInstance | ReactComponent | string} model
  @param {string | object} [propsOrClassName={}]
  @param {object} [props=null]
  @param {....ReactElement} [children=[]]
  @returns {ReactElement}
  @example
  h(model, 'class-name', {},
  // children
  '1', '2'
  );
  h.div({}, 'inner')
  h('div', {}, 'inner')
  h('div', 'classname', {}, 'inner')
  h(Component, 'classname', {},
  h.span()
  )