{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"abi:"}]}
                    abi: self.lower_extern(f.ext),
                    safety: self.lower_safety(f.safety, hir::Safety::Safe),
                    decl: self.lower_fn_decl(&f.decl, t.id, t.span, FnDeclKind::Pointer, None),