{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"impl<'tcx,"}]}
impl<'tcx, T> DerivedTypeCodegenMethods<'tcx> for T where
    Self: BaseTypeCodegenMethods + MiscCodegenMethods<'tcx> + HasTyCtxt<'tcx> + HasTypingEnv<'tcx>