Discussion 議論
This property contains the value of transformed
if that value isn’t nil
. Otherwise, it holds a list of the top level classes that it decodes, which includes NSArray
, NSDictionary
, NSSet
, NSString
, NSNumber
, NSDate
, NSData
, NSURL
, NSUUID
, and NSNull
.
Override this property in subclasses to provide an expanded or different set of allowed transformation classes.