Function walk_ternary

pub fn walk_ternary<'hir, V>(
    v: &mut V,
    cond: &'hir Expression<'hir>,
    if_true: &'hir Expression<'hir>,
    if_false: &'hir Expression<'hir>,
) -> V::Result
where
    V: Visitor<'hir> + ?Sized,