syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"ty::ClauseKind::Trait(ref"}]}
source_snippet:             ty::ClauseKind::Trait(ref data) => data.print(p)?,
context_before:         match *self {
context_after:             ty::ClauseKind::RegionOutlives(predicate) => predicate.print(p)?,