syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // is what CTFE and MIR inlining would care about anyways.
context_before:             // NOTE: We could also only enforce this in `PostAnalysis`, which
context_after:             if trait_item_id != leaf_def.item.def_id