syntax_data: {"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"ocx:"}]}
source_snippet:     ocx: &ObligationCtxt<'_, 'tcx>,
context_before: pub fn type_op_prove_predicate_with_cause<'tcx>(
context_after:     key: ParamEnvAnd<'tcx, ProvePredicate<'tcx>>,