syntax_data: {"ast_node_type":"impl","tokens":[{"end":89,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:         /// The user has written `impl PartialEq for Ty` which means it's non-structural,
context_before:         adts_without_partialeq: FxHashSet<Span>,
context_after:         /// but we don't have a span to point at, so we'll just add them as a `note`.