syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"type"}]}
source_snippet:     type FnInputTys: Copy + Debug + Hash + Eq + SliceLike<Item = Self::Ty> + TypeVisitable<Self>;
context_before:     type Tys: Tys<Self>;
context_after:     type ParamTy: ParamLike;