Take the difference between one array and a number of other arrays.
        Only the elements present in just the first array will remain.

def difference(self, *args):
        """
        Take the difference between one array and a number of other arrays.
        Only the elements present in just the first array will remain.
        """
        setobj = set(self.obj)
        for i, v in enumerate(args):
            setobj = setobj - set(args[i])
        return self._wrap(self._clean._toOriginal(setobj))