syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 ty::Dynamic(trait_ty.fold_with(folder), region.fold_with(folder), representation)
context_after:             ty::Tuple(ts) => ty::Tuple(ts.fold_with(folder)),