syntax_data: {"ast_node_type":"other","tokens":[{"end":23,"kind":"keyword","start":0,"text":"CoroutineArgs"}]}
source_snippet:         CoroutineArgs {
context_before:     pub fn new(cx: I, parts: CoroutineArgsParts<I>) -> CoroutineArgs<I> {
context_after:             args: cx.mk_args_from_iter(parts.parent_args.iter().chain([