public void req4(string[] args)
{
StringBuilder msg = new StringBuilder();
msg.Append("\n4. These packages shall evaluate all the dependencies between files in a specified file set. Please support specifying the collection as all C# files in a sub-directory tree, rooted at a specified path. You may elect to also provide an alternate means to specify the collection as a list of filenames, but you are not required to do so.");
msg.Append("\n Have fulfilled Requirements 4 as the following:");
Console.WriteLine(msg);
DepAnalysis.ShowCommandLine(args);
}