Function bitap::optimal_string_alignment_static

pub fn optimal_string_alignment_static<I: Iterator<Item = usize>>(
    mask_iter: I, 
    pattern_length: usize, 
    max_distance: StaticMaxDistance
) -> Result<impl Iterator<Item = Match>, &'static str>

Like the optimal_string_alignment iterator adapter, but optimized for max_distances of 1-2.