// @dart = 2.6
class UnusedClass {
  UnusedClass() {}
}

abstract class UsedAsBaseClass {
  void usedInSubclass() {}
  void calledFromB() {}
  void calledFromSubclass() {}
}

class UsedAsInterface {
  void usedInSubclass() {}
}

class InstantiatedButMethodsUnused {
  void usedInSubclass() {}
}

class ClassA extends UsedAsBaseClass
    implements UsedAsInterface, InstantiatedButMethodsUnused {
  void usedInSubclass() {}
}

class ClassB extends UsedAsBaseClass
    implements UsedAsInterface, InstantiatedButMethodsUnused {
  void usedInSubclass() {}
  void calledFromSubclass() {}
}

void baseClassCall(UsedAsBaseClass object) {}
void interfaceCall(UsedAsInterface object) {}
void exactCallA(ClassA object) {}
void exactCallB(ClassB object) {}
unusedTopLevel() {}
usedTopLevel() {}
main() {}