class Interface1 {
  void set implementMultipleSetter(int i) {}
  void set declareConcreteImplementMultipleSetter(int i) {}
  void set declareAbstractImplementMultipleSetter(int i) {}
}

class Interface2 {
  void set implementMultipleSetter(int i) {}
  void set declareConcreteImplementMultipleSetter(int i) {}
  void set declareAbstractImplementMultipleSetter(int i) {}
}

class ConcreteClass implements Interface1, Interface2 {
  void set declareConcreteImplementMultipleSetter(int i) {}
  void set declareAbstractImplementMultipleSetter(int i);
}

abstract class AbstractClass implements Interface1, Interface2 {
  void set declareConcreteImplementMultipleSetter(int i) {}
  void set declareAbstractImplementMultipleSetter(int i);
}

class ConcreteSub extends AbstractClass {}

main() {}