how to use json serializable flutter for complex list code example

Example: how to use json serializable flutter for complex list

// If you're having trouble with JSON with list and all that
// Try... 
'https://app.quicktype.io/'

I use it alot of time myself. VS code extension.. 
'https://marketplace.visualstudio.com/items?itemName=quicktype.quicktype'

Installation: 'ext install quicktype.quicktype'.

It support many languages.