asMap abstract method Null safety
Returns a serializable version of an object.
This method returns a Map<String, dynamic> where each key is the name of a property in the implementing type. If a Response.body's type implements this interface, this method is invoked prior to any content-type encoding performed by the Response. A Response.body may also be a List<Serializable>, for which this method is invoked on each element in the list.
Implementation
Map<String, dynamic> asMap();