{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"self.alloc_type_ref_desugared(TypeRef::Tuple(ThinVec::from_iter(param_types))),"}]}
            self.alloc_type_ref_desugared(TypeRef::Tuple(ThinVec::from_iter(param_types))),
        let args = Box::new([GenericArg::Type(
        )]);