syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"ObligationCauseCode::MatchImpl(obligation.cause.clone(),"}]}
source_snippet:             ObligationCauseCode::MatchImpl(obligation.cause.clone(), impl_def_id),
context_before:             obligation.cause.body_id,
context_after:         );