syntax_data: {"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"{"}]}
source_snippet:         {
context_before:             && let ty::Tuple(args) = self.0.args.type_at(1).kind()
context_after:             write!(p, "{}(", p.tcx().item_name(self.0.def_id))?;