type Markdown = {
content: &string,
on_link: &fn(url: string) -> Any,
spacing: &[f64, null],
text_size: &[f64, null],
width: &Length
};
val markdown: fn(
?#on_link: fn(url: string) -> Any,
?#spacing: &[f64, null],
?#text_size: &[f64, null],
?#width: &Length,
content: &string
) -> Widget