{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"assert!(self.impl_trait_defs.is_empty());"}]}
        assert!(self.impl_trait_defs.is_empty());
    ) -> (&'hir hir::Generics<'hir>, T) {
        assert!(self.impl_trait_bounds.is_empty());