Which of the following descriptions about Dart objects and classes is incorrect? In Dart, everything is an object, and every object is an instance of a class. references to fields are invocations of special access methods called getters and setters. Every class implicitly defines an interface that describes what methods are available on its instances. There is no explicit interface declaration syntax Dart supports multiple inheritance in that a class may have more than one direct superclass. A is a class for use by other classes without having to be the parent class. It allows the composition of classes at the source code level. You may compose multiple of these using the with keyword You can override many operators such as $,$ andThe only catch is that if you override the operator, then you should also override the class's hashCode getter