OktaError - Okta Auth Swift SDK

Having some trouble finding documentation surrounding the Swift SDK (Okta-Auth-swift) -Trying to decipher what errors are used for what.

public enum OktaError: Error {

case errorBuildingURLRequest - this is self describing

case connectionError(Error) - this is self describing

case emptyServerResponse - this is self describing

case invalidResponse - A little foggy on this - can you elaborate?

case responseSerializationError(Error, Data) - this is self describing

case serverRespondedWithError(OktaAPIErrorResponse) - this is self describing

case unexpectedResponse - Can you elaborate on this?

case wrongStatus(String) -

case alreadyInProgress

case unknownStatus(OktaAPISuccessResponse) - This one is odd. UnknownStatus error with a success response param. Can you elaborate on this?

case internalError(String) - this is self describing

case invalidParameters(String) - this is self describing

}

Can anyone from the Okta team provide some insight?