The method addAService takes the name of the new service and adds it at the end of the s available Services, if it does not already exist. It returns false if the service is already insta and true otherwise. The method findAService takes the name of a service and returns true if it is installed on server, and false otherwise. The method isSimilar should be implemented in this class. It is used to compare two ser Two servers are similar if they have the same brand, same operating system type and s installed services. The toString method returns a string with the following format: Server: Id: 123, Brand: Lenove, OperatingSystem: Windows, Services: DHCP, DNS, Mail