* The suffix is trimmed and whitespace is replaced with underscores.
     *
     * @param logSuffix the suffix to append to log file names
     * @return this ExecJob instance for method chaining
     */
    public ExecJob logSuffix(final String logSuffix) {
        this.logSuffix = logSuffix.trim().replaceAll("\\s", "_");
        return this;
    }

    /**

    }

    // Test logSuffix setter
    public void test_logSuffix() {
        String testSuffix = "test suffix";
        ExecJob result = execJob.logSuffix(testSuffix);
        assertEquals("test_suffix", execJob.logSuffix);
        assertSame(execJob, result);

        // Test with leading/trailing spaces
        result = execJob.logSuffix("  another suffix  ");