Function with_codec_for_encode 

pub fn with_codec_for_encode<C, R, B, F>(
    state: &'static CodecState<C>,
    config_entry: &EffectiveConfigEntry,
    build: B,
    f: F,
) -> Result<R, EncodeError>
where
    B: FnOnce(&str) -> Result<C, CuError>,
    F: FnOnce(&mut C) -> Result<R, EncodeError>,