syntax_data: {"ast_node_type":"struct","tokens":[{"end":38,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet: pub(crate) struct DuplicateArg<'tcx> {
context_before: #[diag(ty_utils_impl_trait_duplicate_arg)]
context_after:     pub arg: GenericArg<'tcx>,