{"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":"generics:"}]}
        generics: &Generics,
        type_ident: Ident,
    ) -> (Option<ast::ExplicitSelf>, ThinVec<P<Expr>>, Vec<P<Expr>>, Vec<(Ident, P<ast::Ty>)>) {