static void Main(string[] args)
{
//Console.WriteLine("Hello World!");
Bank ethniki = new Bank("ethniki");
ethniki.addBranch("kozanis");
Console.WriteLine(ethniki.getBranchByName("kozanis").Name);
ethniki.getBranchByName("kozanis").addCustomer("midas");
Console.WriteLine("Search for " + ethniki.getBranchByName("kozanis").getCustomerByName("midas"));
// etc ...
}