public protocol ResponseTransformer : CustomDebugStringConvertible
Transforms a response from a less parsed form (e.g.
Data) to a more parsed data structure. Responses pass through
a chain of transformers before being sent to response hooks or observers.
WarningTransformers run in a GCD background queue, and must be thread-safe. You’re in the clear if your transformer touches only its input parameters, and those parameters are value types or otherwise exclusively owned.
Returns the parsed form of this response, or returns it unchanged if this transformer does not apply.
Note that a
Responsecan contain either data or an error, so this method can turn success into failure if the response fails to parse.