getDeserializable
abstract fun <T> getDeserializable(url: String, etag: String? = null, additionalHeaders: Map<String, String>? = null, deserializer: Deserializer<String, T?>, completion: DeserializedNetworkCallback<T>): Disposable
abstract fun <T> getDeserializable(url: URL, etag: String? = null, additionalHeaders: Map<String, String>? = null, deserializer: Deserializer<String, T?>, completion: DeserializedNetworkCallback<T>): Disposable
Asynchronously fetches the given url and returns the payload parsed as a String and then converted to an instance of T using by the given deserializer.
An optional etag can be supplied if the resource being requested is already available on the device and may be able to be re-used.