this.open = false;
                this.usageCount.set(0);

                // Clear mutable references to free memory
                // Note: Some fields may be final and cannot be nulled

                // Clear any other mutable state would go here
            }
        } catch (Exception e) {
            log.error("Failed to perform emergency file handle cleanup", e);
        }

 * types, and also for interfaces and public classes that have public parameter-less constructors.
 * When the non-null default value for a particular parameter type cannot be provided by {@code
 * NullPointerTester}, the caller can provide a custom non-null default value for the parameter type
 * via {@link #setDefault}.
 *
 * @author Kevin Bourrillion
 * @since 10.0
 */

	// server admin credentials change. This is done to ensure
	// that clients cannot decode the token using the temp
	// secret keys and generate an entirely new claim by essentially
	// hijacking the policies. We need to make sure that this is
	// based on admin credential such that token cannot be decoded
	// on the client side and is treated like an opaque value.
	claims, err := auth.ExtractClaims(token, secret)

    snapshotAfterCommit.next().close()
  }

  @Test
  fun `Windows cannot read while writing`() {
    Assumptions.assumeTrue(windows)

    set("k1", "a", "a")
    val editor = cache.edit("k1")!!
    assertThat(cache["k1"]).isNull()
    editor.commit()
  }

  @Test
  fun `Windows cannot write while reading`() {
    Assumptions.assumeTrue(windows)

    set("k1", "a", "a")

   *
   * <p>If {@code maximumSize} is zero, elements will be evicted immediately after being loaded into
   * cache. This can be useful in testing, or to disable caching temporarily.
   *
   * <p>This feature cannot be used in conjunction with {@link #maximumWeight}.
   *
   * @param maximumSize the maximum size of the cache
   * @return this {@code CacheBuilder} instance (for chaining)

     * when used with <code>smb://</code>, <code>smb://workgroup/</code>,
     * <code>smb://server/</code>, or <code>smb://server/share/</code> URLs
     * because workgroups, servers, and shares cannot be dynamically created
     * (although in the future it may be possible to create shares).
     *
     * @throws CIFSException if an error occurs creating the directories
     */
    void mkdirs() throws CIFSException;

        if (urlObj == null) {
            final Object configId = dataMap.get(fessConfig.getIndexFieldConfigId());
            throw new DataStoreException("URL field is null in dataMap. Cannot index document without a URL. configId: " + configId);
        }

        final IndexingHelper indexingHelper = ComponentUtil.getIndexingHelper();

        super(domain, username, (String) null);
        if (domain == null || username == null || ansiHash == null || unicodeHash == null) {
            throw new IllegalArgumentException("External credentials cannot be null");
        }
        this.ansiHash = ansiHash;
        this.unicodeHash = unicodeHash;
        this.hashesExternal = true;
    }

    /**

        private boolean sourceLevelSet = false;

        public void setSourceLevel(String sourceLevel) {
            if (sourceLevelSet) {
                throw new IllegalStateException("Cannot reset sourceLevel attribute; it is already set to: " + sourceLevel);
            } else if (!(USER_LEVEL.equals(sourceLevel) || GLOBAL_LEVEL.equals(sourceLevel))) {

	}
	return nil
}

// DeleteKey deletes a key at the KMS with the given key ID.
// Please note that is a dangerous operation.
// Once a key has been deleted all data that has been encrypted with it cannot be decrypted
// anymore, and therefore, is lost.
func (c *kesConn) DeleteKey(ctx context.Context, req *DeleteKeyRequest) error {
	if err := c.client.DeleteKey(ctx, req.Name); err != nil {