syntax_data: {"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // as `ConstKind::Expr` is only produced via normalization of `ConstKind::Unevaluated`
context_before:                 // trait bound `typeof(N): Add<typeof(1)>` holds. This is currently unnecessary
context_after:                 // which means that the `DefId` would have been typeck'd elsewhere. However in