byte[] buf;

            if (this.freeBuffers > 0) {
                for (int i = 0; i < this.cache.length; i++) {
                    if (this.cache[i] != null) {
                        buf = (byte[]) this.cache[i];
                        this.cache[i] = null;
                        this.freeBuffers--;
                        return buf;
                    }
                }
            }

     */
    public CumulativeScopeArtifactFilter(Collection<String> scopes) {
        this.scopes = new HashSet<>();

        addScopes(scopes);
    }

    /**
     * Creates a new filter that combines the specified filters.
     *
     * @param filters The filters to combine, may be {@code null}.
     */

                                "anyOf": [{"type": "string"}, {"type": "null"}],
                            },
                            "price": {"title": "Price", "type": "number"},
                            "tax": {
                                "title": "Tax",
                                "anyOf": [{"type": "number"}, {"type": "null"}],
                            },
                        },

        if (_conditionQuery != null) {
            QueryBuilder queryBuilder = _conditionQuery.getQuery();
            if (queryBuilder != null) {
                builder.setQuery(queryBuilder);
            }
            _conditionQuery.getFieldSortBuilderList().forEach(sort -> {
                builder.addSort(sort);
            });
        }

        if (_conditionAggregation != null) {

    @Override
    public boolean isAvailable() {
        if (available != null) {
            return available;
        }
        if (generatorList != null && !generatorList.isEmpty()) {
            String path = System.getenv("PATH");
            if (path == null) {
                path = System.getenv("Path");
            }
            if (path == null) {
                path = System.getenv("path");
            }

                async = false;
                next = null;
                received = false;
                error = false;
                verifyFailed = false;
                expiration = null;
                exception = null;
                mid = 0;
                command = 0;
                digest = null;
                response = null;
            }

            @Override

        // Create Kerb5Context with mocked dependencies
        ctx = new Kerb5Context("host.example", "cifs", null, 0, 0, null);
    }

    @AfterEach
    void tearDown() {
        if (mockedStatic != null) {
            mockedStatic.close();
        }
    }

    private static void setPrivateField(Object target, String name, Object value) throws Exception {

        boolean changed = false;

        if (metadata != null && reference != null) {
            Versioning versioning = metadata.getVersioning();
            Versioning versioningRef = reference.getVersioning();
            if (versioning != null && versioningRef != null) {
                String lastUpdated = versioning.getLastUpdated();

        return toFloat(o, null);
    }

    /**
     * Converts to {@link Float}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link Float}
     */
    public static Float toFloat(final Object o, final String pattern) {
        if (o == null) {
            return null;

        }
    }

    // Test property filter returning null simulation
    @Test
    public void test_get_filterReturnsNull() {
        // The filter.null property is configured to simulate null filter behavior
        try {
            fessConfig.get("filter.null");
            fail("Should throw exception when property is not found");