syntax_data: {"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // the future we may allow directly lowering to `ConstKind::Expr` in which case
context_before:                 // which means that the `DefId` would have been typeck'd elsewhere. However in
context_after:                 // we would not be proving bounds we should.