| Class: | net.hrider.api.usecases.CRUDEmployees.java | 
                    Example of how to create, update and delete employees. After creating them, we will 
                    update one of them to see that the changes have been saved by printing a list of the
                    employees before and after.
                    
                    
As in the previous use case, create an instance of 
HRiderService '
service' that
will perform all the code for the request and answers with our Jersey client.
After creating a fictional company 'company', create thee employees:
Link employeesLink = company.getLinks().getEmployees();
Employee emp1 = service.create(employeesLink, buildEmployee("EMP1", "Employee 1", "[email protected]"));
Employee emp2 = service.create(employeesLink, buildEmployee("EMP2", "Employee 2", "[email protected]"));
Employee emp3 = service.create(employeesLink, buildEmployee("EMP3", "Employee 3", "[email protected]"));        
                    
                    To update an employee, we modify their attributes and perform a PUT to their link.
                    In this case, we can take advantage from the 
self-link that all the resources have
                    to change the employee code to 'NEW':
emp1.setCode("NEW");
service.put(emp1.getLinks().getSelf(), emp1);
                    
                    To confirm that the changes have been saved, obtain all the employees and print them.
                    To get the employees perform a GET request to the link 'employees' of the compny:
EmployeesCollection collection = service.get(EmployeesCollection.class, 
        company.getLinks().getEmployees());
printEmployees(collection.getEmbedded().getEmployees());
                    
                    The obtained result is the expected: the code 'Employee' has been replaced for 'NEW':
                    
ID                  Code      Email               Name                
------------------- --------- ------------------  ------------------  
184908605578806810  NEW       [email protected]       EMPLOYEE 1          
184908605705684507  EMP2      [email protected]       EMPLOYEE 2          
184908605795862044  EMP3      [email protected]       EMPLOYEE 3          
                    
                    Now delete EMPLOYEE1 and print the employees again:
                    
service.delete(emp1.getLinks().getSelf());
collection = service.get(EmployeesCollection.class, company.getLinks().getEmployees());
printEmployees(collection.getEmbedded().getEmployees());
                    
                    The obtained result is the expected: the employee with 'NEW' code does not appear:
                                        
ID                  Code      Email               Name                
------------------- --------- ------------------  ------------------  
184908605705684507  EMP2      [email protected]       EMPLOYEE 2          
184908605795862044  EMP3      [email protected]       EMPLOYEE 3