Downloaded introspectionSchema.json File is not completed

[Amrhalawani]

for instance, I will use
https://apollo-fullstack-tutorial.herokuapp.com/graphql

when I manually download the schema from the playground (I mean the right side Schema button and then pressed on download btn ) to use it for an android client the introspectionSchema.json that I got has many errors

when I use the JSON file to generate models always got this error
**Failed to locate schema root node __schema
also if I put the whole JSON object inside these
{ "data": { "__schema": { here } } }

then i got this error
**Required value 'types_' (JSON name 'types') missing at $.data.__schema

so i realised that the downloaded json file is uncompleted for some reason