Function check_key_specifier 

pub fn check_key_specifier<S, E>(spec: &S, path: &str)
where
    S: KeySpecifier + Debug + PartialEq + for<'p> TryFrom<&'p KeyPath, Error = E>,
    E: Debug,

Check that spec produces the ArtiPath from path, and that path parses to spec

Panics

Panics if path isn’t valid as an ArtiPath or any of the checks fail.