syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"origins.extend(iter::repeat(parent).take(head.predicates.len()));"}]}
source_snippet:             origins.extend(iter::repeat(parent).take(head.predicates.len()));
context_before:             head = self.tcx().predicates_of(parent);
context_after:         }