{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"add_impl_block(impl_generics.clone(),"}]}
    add_impl_block(impl_generics.clone(), sym::CoerceUnsized, gen_args);
    add_impl_block(impl_generics.clone(), sym::DispatchFromDyn, gen_args.clone());
}