domain property
The domain of where to find the error code.
This field is only available on iOS and represents a "domain" from where
the errorCode is from. This value is taken directly from an NSError
in Objective-C. See
https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/ErrorHandlingCocoa/ErrorObjectsDomains/ErrorObjectsDomains.html
for more information on error handling on iOS.
Implementation
final String? domain;