Function rustdoc::html::highlight::render_with_highlighting

pub(crate) fn render_with_highlighting(
    src: &str, 
    out: &mut Buffer, 
    class: Option<&str>, 
    playground_button: Option<&str>, 
    tooltip: Option<(Option<Edition>, &str)>, 
    edition: Edition
)

Highlights src, returning the HTML output.