/** The snapshot to return from [next]. Null if we haven't computed that yet. */
      private var nextSnapshot: Snapshot? = null

      /** The snapshot to remove with [remove]. Null if removal is illegal. */
      private var removeSnapshot: Snapshot? = null

      override fun hasNext(): Boolean {
        if (nextSnapshot != null) return true

        synchronized(this@DiskLruCache) {

		<profile>
			<id>build</id>
			<activation>
				<activeByDefault>true</activeByDefault>
			</activation>
			<properties>
				<test.include.path>**/*Test.java</test.include.path>
				<test.command.args>--illegal-access=permit -Djava.awt.headless=true</test.command.args>
			</properties>
		</profile>
		<profile>
			<id>integrationTests</id>
			<properties>
				<test.include.path>**/*Tests.java</test.include.path>

   *
   * @throws IllegalStateException if multiple charset values have been set for this media type
   * @throws IllegalCharsetNameException if a charset value is present, but illegal
   * @throws UnsupportedCharsetException if a charset value is present, but no support is available
   *     in this instance of the Java virtual machine
   */
  public Optional<Charset> charset() {

    /** The key of the message: Login failed. */
    public static final String ERRORS_LOGIN_FAILURE = "{errors.login.failure}";

    /** The key of the message: Illegal transition. Please try again. */
    public static final String ERRORS_APP_ILLEGAL_TRANSITION = "{errors.app.illegal.transition}";

    /** The key of the message: It may have been deleted by another process. Please try again. */

// descriptions for all the error responses.
var errorCodes = errorCodeMap{
	ErrInvalidCopyDest: {
		Code:           "InvalidRequest",
		Description:    "This copy request is illegal because it is trying to copy an object to itself without changing the object's metadata, storage class, website redirect location or encryption attributes.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidCopySource: {

      this.chars = checkNotNull(chars);
      try {
        this.bitsPerChar = log2(chars.length, UNNECESSARY);
      } catch (ArithmeticException e) {
        throw new IllegalArgumentException("Illegal alphabet length " + chars.length, e);
      }

      // Compute how input bytes are chunked. For example, with base64 we chunk every 3 bytes into

# /- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# five framework-embedded messages (don't change key names)
# - - - - - - - - - -/
errors.login.failure = Logowanie nie powiodło się.
errors.app.illegal.transition = Nieprawidłowe przejście. Spróbuj ponownie.
errors.app.db.already.deleted = Mogło zostać już usunięte przez inny proces. Spróbuj ponownie.

# ---------------------
# /- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# five framework-embedded messages (don't change key names)
# - - - - - - - - - -/
errors.login.failure = Falha no login.
errors.app.illegal.transition = Transição ilegal. Por favor, tente novamente.
errors.app.db.already.deleted = Pode ter sido excluído por outro processo. Por favor, tente novamente.

# ---------------------
# /- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# five framework-embedded messages (don't change key names)
# - - - - - - - - - -/
errors.login.failure = लॉगिन विफल रहा।
errors.app.illegal.transition = अवैध परिवर्तन। कृपया पुनः प्रयास करें।
errors.app.db.already.deleted = इसे किसी अन्य प्रक्रिया द्वारा हटाया जा सकता है। कृपया पुनः प्रयास करें।

# ---------------------
# /- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# five framework-embedded messages (don't change key names)
# - - - - - - - - - -/
errors.login.failure = Login gagal.
errors.app.illegal.transition = Transisi tidak valid. Silakan coba lagi.
errors.app.db.already.deleted = Mungkin telah dihapus oleh proses lain. Silakan coba lagi.