{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
        // Make it so we won't remove the top subtree when reversing fixups.
            quote! {fixed_up_span => ::core::compile_error! { "my cool compile_error!" } };
        let top_subtree_delimiter_mut = result.top_subtree_delimiter_mut();