Return the number of items on page.

    Args:
        * page = The Page to test for
        * total_items = the total item count

    Returns:
        * Integer - Which represents the calculated number of items on page.

def return_item_count_on_subpage(self, subpage=1, total_items=1):
        """
    Return the number of items on page.

    Args:
        * page = The Page to test for
        * total_items = the total item count

    Returns:
        * Integer - Which represents the calculated number of items on page.
        """
        up_to_subpage = ((subpage - 1) * self.subpage_items)
        #   Number of items up to the page in question

        if total_items > up_to_subpage:
            #   Remove all the items up to the page in question
            #
            count = total_items - up_to_subpage
        else:
            count = total_items

        if count >= self.subpage_items:
            # The remaining items are greater than the items per page
            # so the answer is a full page
            return self.subpage_items
        else:
            #   There are less items than a full page,
            #
            return count