syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"tcx.explicit_super_predicates_of(trait_pred.def_id())"}]}
source_snippet:                         tcx.explicit_super_predicates_of(trait_pred.def_id())
context_before:                     queue.extend(
context_after:                             .iter_identity_copied()