Add a getUnsold method to the Action class with the following header.

Add a getUnsold method to the Action class with the following header.

public ArrayLIst<Lot>getUnsold()

This method should iterate over the Lots field, storing unsold lots in a new ArrayList local variable. what you are looking for is Lot objects whose highestBitd field is Null. at the end of the method, return the list of unsold lots.