{"ast_node_type":"other","tokens":[{"end":17,"kind":"keyword","start":0,"text":"type"}]}
    type Result =
impl EraseType for Result<Option<ty::Instance<'_>>, rustc_errors::ErrorGuaranteed> {
        [u8; size_of::<Result<Option<ty::Instance<'static>>, rustc_errors::ErrorGuaranteed>>()];