void writeToProject() {
            source """
                interface SomeInterface {
                    int foo();
                }
            """
            source """
                class Anonymous1 {
                    SomeInterface getAnonymous() {
                        return new SomeInterface() {
                            public int foo() {
                                return 0;

        doNothing().`when`(extensions).configure(any<TypeOf<SomeInterface<Long>>>(), any<Action<SomeInterface<Long>>>())

        extensions.configure<SomeInterface<Long>> { println(p) }

        inOrder(extensions) {
            verify(extensions).configure(any<TypeOf<SomeInterface<Long>>>(), any<Action<SomeInterface<Long>>>())
            verifyNoMoreInteractions()
        }
    }
}

        }
    }

    class SubClass extends SomeClass {
        Long other
    }

    interface SubInterface extends SomeInterface {
        Long getOther()

        void setOther(Long l)
    }

    abstract class AbstractSuperClass implements SomeInterface {
        Number prop
    }

    abstract class AbstractSubClass extends AbstractSuperClass implements SubInterface {
        Long other

    assertNull(ArbitraryInstances.get(EmptyEnum.class));
    assertEquals(Direction.UP, ArbitraryInstances.get(Direction.class));
  }

  public void testGet_interface() {
    assertNull(ArbitraryInstances.get(SomeInterface.class));
  }

  public void testGet_runnable() {
    ArbitraryInstances.get(Runnable.class).run();
  }

  public void testGet_class() {

    assertNull(ArbitraryInstances.get(EmptyEnum.class));
    assertEquals(Direction.UP, ArbitraryInstances.get(Direction.class));
  }

  public void testGet_interface() {
    assertNull(ArbitraryInstances.get(SomeInterface.class));
  }

  public void testGet_runnable() {
    ArbitraryInstances.get(Runnable.class).run();
  }

  public void testGet_class() {