We are developing a simulator for print queues in a network, where multiple printers can receive requests from several sources. A printer is limited in the amount of data (measured in blocks) it can print in a given time period (call the time period a "step" in the simulation). The print() method is called once for each printer in each step of the simulation. If multiple requests are sent to a printer while it is in the process of printing a document, it must store those requests in a queue, and then process them in a first-in first-out order. A printer can start printing a document at the beginning of a time step. Required:
Complete the simulation (Doc, Printer, and PrintQueueTester). You will need to complete the Printer and Doc classes (do not add any fields to the Doc class, and do not change the API), and use the PrintQueueTester class to test your solution.