for (LoadingCache<Key, String> cache : caches()) {
      Key key1 = new Key(1);
      String value1 = key1.toString();
      Key key2 = new Key(2);
      String value2 = key2.toString();
      assertThat(cache.getUnchecked(key1)).isSameInstanceAs(value1);
      assertThat(cache.getUnchecked(key2)).isSameInstanceAs(value2);
      assertThat(cache.asMap().keySet()).isEqualTo(ImmutableSet.of(key1, key2));

    for (LoadingCache<Key, String> cache : caches()) {
      Key key1 = new Key(1);
      String value1 = key1.toString();
      Key key2 = new Key(2);
      String value2 = key2.toString();
      assertThat(cache.getUnchecked(key1)).isSameInstanceAs(value1);
      assertThat(cache.getUnchecked(key2)).isSameInstanceAs(value2);
      assertThat(cache.asMap().keySet()).isEqualTo(ImmutableSet.of(key1, key2));

        pw.println("");
        pw.println("# Another comment");
        pw.println("");
        pw.println("# A value comment");
        pw.println("key1 = val1");
        pw.println("");
        pw.println("# Another value comment");
        pw.println("key2 = ${key1}/foo");
        pw.println("");
        pw.println("# A third comment");
        pw.println("key3 = val3");
        pw.println("");

      int maxCount = (int) (4 * Math.log(2 * keyBits * hashBits) + 1);
      while (same != 0xffffffff || diff != 0xffffffff) {
        int key1 = rand.nextInt();
        // flip input bit for key2
        int key2 = key1 ^ (1 << i);
        // get hashes
        int hash1 = function.hashInt(key1).asInt();
        int hash2 = function.hashInt(key2).asInt();
        // test whether the hash values have same output bits

      int maxCount = (int) (4 * Math.log(2 * keyBits * hashBits) + 1);
      while (same != 0xffffffff || diff != 0xffffffff) {
        int key1 = rand.nextInt();
        // flip input bit for key2
        int key2 = key1 ^ (1 << i);
        // get hashes
        int hash1 = function.hashInt(key1).asInt();
        int hash2 = function.hashInt(key2).asInt();
        // test whether the hash values have same output bits

    async def get_model_a(name: str, model_c=Depends(get_model_c)):
        return {
            "name": name,
            "description": "model-a-desc",
            "foo": model_c,
            "tags": {"key1": "value1", "key2": "value2"},
        }

    client = TestClient(app)
    return client


def test_filter_sub_model(client: TestClient):
    response = client.get("/model/modelA")

        // Add metadata
        data.addMetaData("key1", "value1");
        data.addMetaData("key2", 123);
        data.addMetaData("key3", true);

        Map<String, Object> metaDataMap = data.getMetaDataMap();
        assertNotNull(metaDataMap);
        assertEquals(3, metaDataMap.size());

        assertEquals("value1", metaDataMap.get("key1"));
        assertEquals(123, metaDataMap.get("key2"));

        responseData.addMetaData("key1", "value1");
        responseData.addMetaData("key2", 123);

        // Execute - should not throw any exception
        processor.process(responseData);

        // Verify metadata is unchanged
        assertEquals(2, responseData.getMetaDataMap().size());
        assertEquals("value1", responseData.getMetaDataMap().get("key1"));

        ExtractData data = new ExtractData();

        data.putValue("key1", "value1");
        data.putValue("key2", "value2");
        data.putValue("key3", "value3");

        Set<String> keySet = data.getKeySet();
        assertNotNull(keySet);
        assertEquals(3, keySet.size());
        assertTrue(keySet.contains("key1"));
        assertTrue(keySet.contains("key2"));

    }

    @Test
    void testPropertiesClear() {
        // Test for issue #11552: NullPointerException when clearing properties
        Model model = new Model();
        model.addProperty("key1", "value1");
        model.addProperty("key2", "value2");
        assertEquals(2, model.getProperties().size());

        // This should not throw NullPointerException
        model.getProperties().clear();