Function quick_xml::escape::unescape_with

pub fn unescape_with<'input, 'entity, F>(
    raw: &'input str,
    resolve_entity: F
) -> Result<Cow<'input, str>, EscapeError>where
    F: FnMut(&str) -> Option<&'entity str>,

Unescape an &str and replaces all xml escaped characters (&...;) into their corresponding value, using a resolver function for custom entities.

If feature escape-html is enabled, then recognizes all HTML5 escapes.