pub fn string(&self) -> &'a [u8] {
        match *self {
            Aux::String(x) => x,
            _ => panic!("not a string"),
        }
    }
/// Get string from aux data (panics if not a string).
Get string from aux data (panics if not a string).
Get string from aux data ( panics if not a string ) .
pub fn string(&self) -> &'a [u8] {
        match *self {
            Aux::String(x) => x,
            _ => panic!("not a string"),
        }
    }
pub fn string ( & self ) -> & ' a [ u8 ] { match * self { Aux :: String ( x ) => x , _ => panic ! ( " " ) , } }
Get string from aux data (panics if not a string).
Get string from aux data ( panics if not a string ) .
&self
&self