our class StringDoubling has a method doubleString(), which takes a String as an input parameter and returns the doubled copy of that string. Your task: Finish your main method by follow the steps outlined in your main (precisely!) Basically, your program should read in a command-line argument, print it out, and then double it 5 times (printing it out every time). For example, if your command-line value is 0, your program should output the following: 0 00 0000 00000000 0000000000000000 00000000000000000000000000000000 and if your command-line value is a, your program should output the following: a aa aaaa

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