{"ast_node_type":"function","tokens":[{"end":98,"kind":"keyword","start":0,"text":"#[inline]"}]}
    #[inline] extern "rust-call" fn call_mut(&mut self , (c, ): (char, )) -> char::EscapeUnicode {
impl FnMut<(char, )> for CharEscapeUnicode {
        Fn::call(&*self , (c, ))