abstract fun config(name: String, value: String): Describer
Sets a configuration param of the cache being used.
e.g. config("location", "https://some/cache").
Values may be logged. Secrets (e.g. passwords) should not be declared with this method.
Implementations should describe their config where possible.
Subsequent calls to this method with the same name argument will replace the previously supplied value argument.
Subsequent calls to this method with different name arguments will append values.