Function c2rust_refactor::matcher::flat_map_match_with

pub fn flat_map_match_with<'a, 'tcx, P, T, V, F>(
    init_mcx: MatchCtxt<'a, 'tcx>, 
    pattern: P, 
    target: &mut T, 
    callback: F
) where
    P: Pattern<V>,
    T: MutVisit,
    F: FnMut(V, MatchCtxt<'a, 'tcx>) -> SmallVec<[V; 1]>,