`Notifier::<Config>::get` is unsound

[fuzzypixelz]

Describe the bug

This function has the following signature:

pub fn get<'a>(&'a self, key: &str) -> ZResult<LookupGuard<'a, Config>>

Where LookupGuard<'a, Config> dereferences (using unsafe) into Config. However, the underlying ValidatedMap::get returns Any and is supposed to be the type of a member of Config such as ConnectConfig.

By the way, LookupGuard is not even exported.

Either the signature should be fixed, or get should be removed entirely in favor of get_json.

To reproduce

N/A

System info

• ref: ca058bd