Function write_docs_with_options 

pub fn write_docs_with_options<I, P>(
    inputs: I,
    out_dir: impl AsRef<Path>,
    options: &CfsOptions,
) -> Result<PathBuf, Error>
where
    I: IntoIterator<Item = P>,
    P: AsRef<Path>,

Generate static HTML documentation with options and write it to out_dir/index.html.