public function retrieve(string $key)
    {
        $token = null;

        $storageInstance = $this->getRepository();

        $token = $storageInstance->{$key}?? null;

        return $token;
    }
public function retrieve(string $key)
    {
        $token = null;

        $storageInstance = $this->getRepository();

        $token = $storageInstance->{$key}?? null;

        return $token;
    }
public function retrieve ( string $ key ) { $ token = null ; $ storageInstance = $ this -> getRepository ( ) ; $ token = $ storageInstance -> { $ key } ?? null ; return $ token ; }
Retrieves an Expo token with a given identifier

@param string $key

@return array|string|null
Retrieves an Expo token with a given identifier