Content stack appends Connection after all field names that are references, and also adds subfields in GraphQL.
example:
Content type field:
Reference to ContentBelt type
GraphQL request response:
"content_beltsConnection": { "edges": [ { "node": { "title": "Collapsibles test", "system": { "uid": "blt847f4e37080902a8" } } },] }
however the tsgen result of that is just the field name, with an array of the content type:
navigation_menu: ContentBelt[]