@Override
    public boolean isEquivalentTo(final AbstractPicker picker) {
        return picker instanceof EmptyPicker && (Objects.equal(status, ((EmptyPicker) picker).status) || (status.isOk() && ((EmptyPicker) picker).status.isOk()));
    }
@Test
    public void testIsEquivalentTo() {
        EmptyPicker picker = new EmptyPicker(mock(Status.class));
        assertTrue(picker.isEquivalentTo(picker));
    }