NilCredentials

public struct NilCredentials : ClientCredentials

A type used to indicate that no credentials should be passed for this request. This can be used to override the default credentials for a client, to prevent those credentials from being used for a particular request.

Usage Example:

client.get("/public", credentials: NilCredentials()) { (response: MyResponse?, error: RequestError?) -> Void in
    guard let response = response else {
        print("failed request: \(error)")
    }
    print("Successfully recieved \(response)")
}