*
   * @param expression a boolean expression
   * @param errorMessage the exception message to use if the check fails; will be converted to a
   *     string using {@link String#valueOf(Object)}
   * @throws IllegalArgumentException if {@code expression} is false
   */
  public static void checkArgument(boolean expression, @Nullable Object errorMessage) {
    if (!expression) {

   *
   * @param expression a boolean expression
   * @param errorMessage the exception message to use if the check fails; will be converted to a
   *     string using {@link String#valueOf(Object)}
   * @throws IllegalArgumentException if {@code expression} is false
   */
  public static void checkArgument(boolean expression, @Nullable Object errorMessage) {
    if (!expression) {

            }
        }

        // Provide more detailed error information
        String errorMessage = "SMB server did not become ready within timeout";
        if (lastException != null) {
            errorMessage += ". Last error: " + lastException.getMessage();
        }
        throw new RuntimeException(errorMessage, lastException);
    }

    private void deleteRecursively(SmbFile file) throws SmbException {