    @Test
    public void testParameter() {

        Employee employee = new Employee("john@gmail.com", "John", 2000);
        if (logger.isDebugEnabled()) {
            logger.debug("The bonus for employee: " + employee.getName() + " is " + employeeService.calculateBonus(employee));
        }
        logger.debug("The bonus for employee {} is {}", employee.getName(), employeeService.calculateBonus(employee));
    }