syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"impl<'tcx>"}]}
source_snippet: impl<'tcx> rustc_type_ir::inherent::BoundExistentialPredicates<TyCtxt<'tcx>>
context_after:     for &'tcx ty::List<ty::PolyExistentialPredicate<'tcx>>