def get_value(self, item, source_name):
        """
        This method receives an item from the source and a source name,
        and returns the text content for the `source_name` node.
        """
        return force_text(smart_str(item.findtext(source_name))).strip()
This method receives an item from the source and a source name,
        and returns the text content for the `source_name` node.