TypeInfer.swift

public enum VanillaRequestError: Error
{
    case unexpectedResult(String)
    case restfulError(NSError)
}


// the result from a Vanilla API request
public enum VanillaRequestResult<T>
{
    case success(T)
    case failure(VanillaRequestError)
}

// variant that expects a single T
internal func responseProcessingDataTask<T: JSONInitializable>(_ request: URLRequest, resultsKey: String? = nil, completion: ((VanillaRequestResult<T>)->())?) -> URLSessionDataTask
{

}

// variant that expects an array of T
internal func responseProcessingDataTask<T: JSONInitializable>(_ request: URLRequest, resultsKey: String? = nil, completion: ((VanillaRequestResult<[T]>)->())?) -> URLSessionDataTask
{

}