Side navigation for React Native Router Flux v4, using drawer, opens and closes with button

RNRFDrawer.js

//been trying to find an example with RNRF that has a drawer that can be opened and closed with a 
//button, and responds in the same way as v3
//it's been impossible to find this anywhere in the docs, so here's a few snippets to help out

//so here you have your new basic nav router setup:

<Router>
      <Scene key='root'>
         <Drawer
              hideNavBar
              key="drawer"
              contentComponent={DrawerContent} 
              drawerWidth={300}
              >

          <Scene key='drawerChildrenWrapper'>
              //etc...
              
/*
this problem came up, unlike v3 where you can create a <Scene> with an open={false} parameter that can be managed by
component state, and the event can be triggered by Actions.refresh({open:true})
You now have the React Navigation built
<Drawer>
This component has a special feature that can be triggered by the magic actions:
Actions.drawerOpen()
Actions.drawerClose()
*/