// Transient error
        exception = new SmbOperationException(SmbOperationException.ErrorCode.SERVICE_UNAVAILABLE, "Server busy");
        assertFalse(exception.isNetworkError());
        assertFalse(exception.isAuthenticationError());
        assertFalse(exception.isFileSystemError());
        assertTrue(exception.isTransientError());
    }

    @Test

        return errorCode.getCategory() == ErrorCategory.FILE_SYSTEM;
    }

    /**
     * Check if this is a transient error
     *
     * @return true if transient error
     */
    public boolean isTransientError() {
        return errorCode.getCategory() == ErrorCategory.TRANSIENT;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();