ios – How to create swift combine extension type constraints for a class that received a generic type?

I have a model class Response<T> constructed as below:

class Response<T>: Codable where T: Codable {
    var code: Int?
    var data: T?
    var message: String?
}

I’d like to make a swift combine extension that type constraints to the Response<T> class. I’d like to create a extended func to unwrap the data from my backend response and throw error if there is any.

My last approach is like this:

extension Publisher where Output == Response<T>, T: Codable {
    func extractData() -> AnyPublisher<T, APIError> {
        return tryMap { response in
            guard let data = response.data else {
                throw APIError.dataNotFound
            }
            return data
        }
        .eraseToAnyPublisher()
    }
}

enum APIError: Error {
    case dataNotFound
    // Other error
}

After wrote that code, I get error Cannot find type 'T' in scope in line where T type is typed.

How to get rid of the error and get the functionality as I need?

Thank you in advance.