def METHOD_NAME(self):
    """Ensure we get an annotation for a target block"""
    queryset = StreamBlockPageQuerySet(SublandingPage)
    annotated_queryset = queryset.block_in_field(
        "heading", "sidebar_breakout"
    ).annotate_block_in("heading", "sidebar_breakout")
    self.assertEqual(annotated_queryset.count(), 1)
    self.assertEqual(annotated_queryset[0].heading_value, "Test text")