{"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"t:"}]}
    t: T,
pub fn try_par_for_each_in<T: IntoIterator, E: DynSend>(
    for_each: impl Fn(&<T as IntoIterator>::Item) -> Result<(), E> + DynSync + DynSend,