Function grcov::rewrite_paths

pub fn rewrite_paths(
    result_map: CovResultMap, 
    path_mapping: Option<Value>, 
    source_dir: Option<&Path>, 
    prefix_dir: Option<&Path>, 
    ignore_not_existing: bool, 
    to_ignore_dirs: &[impl AsRef<str>], 
    to_keep_dirs: &[impl AsRef<str>], 
    filter_option: Option<bool>, 
    file_filter: FileFilter
) -> CovResultIter