How to get a node reference from a widget?

Plugin and Widget API
1 
function update(node, count) {
    // set some property on node using count
}

function Widget() {
  const [count, setCount] = useSyncedState('count', 0)

  return (
    <Frame width={100} height={100} >
      <Text
       onClick={
         () => {
            // update(??, count)
            setCount(count + 1)
         }
       }
       >
       The count is: {count}
      </Text>
    </Frame>
  )
}

How do I send the text node’s id or WidgetNode’s reference to the update function?

I think we can get the WidgetNode’s reference from figma.currentPage.selection[0], right? Is there any way to get a TextNode’s reference if the widget has multiple TextNodes?

2

You can get a WidgetNode, but not its nested nodes.