Function from_str 

pub fn from_str<'de, T: Deserialize<'de>>(s: &'de str) -> Result<T, Error>

Deserializes a value from an XML string.

#[derive(deser::Deserialize)]
struct Link {
    #[deser(rename = "@href")]
    href: String,
}

let link: Link = deser_xml::from_str(r#"<a href="/x"/>"#).unwrap();
assert_eq!(link.href, "/x");