return getProjectSelectors(pa -> !pa.optional() && pa.active());
    }

    /**
     * @return Optional active project selectors, never {@code null}.
     */
    public Set<String> getOptionalActiveProjectSelectors() {
        return getProjectSelectors(pa -> pa.optional() && pa.active());
    }

    /**
     * @return Required inactive project selectors, never {@code null}.

     *
     * @return the deviceState
     */
    public final int getDeviceState() {
        return this.deviceState;
    }

    /**
     * Gets the action taken.
     *
     * @return the action
     */
    public final int getAction() {
        return this.action;
    }

    /**
     * Gets the server file identifier.
     *
     * @return the serverFid
     */

    var result = peekedHeader

    if (result == null) {
      result = readHeader()
      peekedHeader = result
    }

    if (result.isEndOfData) return null

    return result
  }

  /**
   * Consume the next header in the stream and return it. If there is no header to read because we
   * have reached a limit, this returns [END_OF_DATA].
   */
  internal fun readHeader(): DerHeader {

	typ2, ok2 := crypto.IsEncrypted(ofi.Metadata)
	if ok1 != ok2 {
		return false
	}
	if typ1 != typ2 {
		return false
	}
	if fi.IsCompressed() != ofi.IsCompressed() {
		return false
	}
	if !fi.TransitionInfoEquals(ofi) {
		return false
	}
	if !fi.ModTime.Equal(ofi.ModTime) {
		return false
	}
	return fi.Erasure.Equal(ofi.Erasure)
}

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.access_token";
    }

    @Override
    public String asEsIndexType() {
        return "access_token";
    }

    @Override
    public String asEsSearchType() {
        return "access_token";
    }

    @Override

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.elevate_word_to_label";
    }

    @Override
    public String asEsIndexType() {
        return "elevate_word_to_label";
    }

    @Override
    public String asEsSearchType() {
        return "elevate_word_to_label";
    }

    @Override

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.key_match";
    }

    @Override
    public String asEsIndexType() {
        return "key_match";
    }

    @Override
    public String asEsSearchType() {
        return "key_match";
    }

    @Override

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.related_content";
    }

    @Override
    public String asEsIndexType() {
        return "related_content";
    }

    @Override
    public String asEsSearchType() {
        return "related_content";
    }

    @Override

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.related_query";
    }

    @Override
    public String asEsIndexType() {
        return "related_query";
    }

    @Override
    public String asEsSearchType() {
        return "related_query";
    }

    @Override

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_log.favorite_log";
    }

    @Override
    public String asEsIndexType() {
        return "favorite_log";
    }

    @Override
    public String asEsSearchType() {
        return "favorite_log";
    }

    @Override