syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"ClauseKind::RegionOutlives(pair)"}]}
source_snippet:             ClauseKind::RegionOutlives(pair) => pair.fmt(f),
context_before:             ClauseKind::Trait(a) => a.fmt(f),
context_after:             ClauseKind::TypeOutlives(pair) => pair.fmt(f),