@Nonnull
    Collection<ChecksumAlgorithm> select(@Nonnull Collection<String> algorithmNames);

    /**
     * Calculates checksums for specified data.
     *
     * @param data        The content for which to calculate checksums, must not be {@code null}.
     * @param algorithms  The checksum algorithms to use, must not be {@code null}.
     * @return The calculated checksums, indexed by algorithms, never {@code null}.

  }

  private CharStreams() {}

  /**
   * Copies all characters between the {@link Readable} and {@link Appendable} objects. Does not
   * close or flush either object.
   *
   * @param from the object to read from
   * @param to the object to write to
   * @return the number of characters copied
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue

     * @param user The user to update.
     */
    void update(User user);

    /**
     * Deletes a user from the authentication chain.
     * @param user The user to delete.
     */
    void delete(User user);

    /**
     * Changes the password for the specified user.
     * @param username The username for which to change the password.
     * @param password The new password.

/**
 * @param {?string} str
 * @return {boolean} Whether the given string is null or is the empty string.
 * @public
 */
Platform.stringIsNullOrEmpty = function(str) {
  return !str;
};


/**
 * @param {?string} str
 * @return {string} Original str, if it is non-null. Otherwise empty string.
 */
Platform.nullToEmpty = function(str) {
  return str || "";
};


/**
 * @param {?string} str

     * Constructor for SMB2 request with configuration.
     *
     * @param config the configuration object
     */
    protected ServerMessageBlock2Request(final Configuration config) {
        super(config);
    }

    /**
     * Constructor for SMB2 request with configuration and command.
     *
     * @param config the configuration object
     * @param command the SMB2 command code
     */

    /**
     * Converts to {@link Byte}.
     *
     * @param o
     *            The object to convert
     * @return The converted {@link Byte}
     */
    public static Byte toByte(final Object o) {
        return toByte(o, null);
    }

    /**
     * Converts to {@link Byte}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string

     * Get negotiation status
     *
     * @return status code (0 = success)
     */
    public int getStatus() {
        return status;
    }

    /**
     * Set negotiation status
     *
     * @param status status code
     */
    public void setStatus(int status) {
        this.status = status;
    }

    /**
     * Get selected protocol version
     *
     * @return selected version
     */

     */
    CredentialsInternal clone();

    /**
     * Create an SSP context for authentication.
     * @param tc the CIFS context
     * @param targetDomain the target domain for authentication
     * @param host the target host
     * @param initialToken initial authentication token, if any
     * @param doSigning whether message signing should be enabled
     * @return a new SSP authentication context

     *
     * @return minimum protocol version
     */
    public int getMinVersion() {
        return minVersion;
    }

    /**
     * Set the minimum SMB Direct protocol version
     *
     * @param minVersion minimum protocol version
     */
    public void setMinVersion(int minVersion) {
        this.minVersion = minVersion;
    }

    /**
     * Get the maximum SMB Direct protocol version
     *

    /**
     * Appends a query string to the query buffer with proper formatting.
     * Handles OR operators and wraps complex queries in parentheses when necessary.
     *
     * @param queryBuf the StringBuilder to append to
     * @param query the query string to append
     */
    protected void appendQuery(final StringBuilder queryBuf, final String query) {
        String q = query;