Function analyze_coroutine_closure_captures

pub fn analyze_coroutine_closure_captures<'a, 'tcx: 'a, T>(
    parent_captures: impl IntoIterator<Item = &'a CapturedPlace<'tcx>>,
    child_captures: impl IntoIterator<Item = &'a CapturedPlace<'tcx>>,
    for_each: impl FnMut((usize, &'a CapturedPlace<'tcx>), (usize, &'a CapturedPlace<'tcx>)) -> T,
) -> impl Iterator<Item = T> + Captures<'a> + Captures<'tcx>