syntax_data: {"ast_node_type":"struct","tokens":[{"end":31,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet: pub struct FnSig<I: Interner> {
context_before: #[derive(TypeVisitable_Generic, TypeFoldable_Generic, Lift_Generic)]
context_after:     pub inputs_and_output: I::Tys,