syntax_data: {"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                         let trait_ref = trait_ref.with_self_ty(p.tcx, dummy_self);
context_before:                         let dummy_self = Ty::new_fresh(p.tcx, 0);
context_after:                         p.print_def_path(trait_ref.def_id, trait_ref.args)?;