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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_item_with_id(self, uid):
 """ Returns item for defined UID. :Args: - uid: UID for the item :Returns: Returns item object. Returns None if nothing was found. """

        for item in self.get_items():
            if item.id == uid:
                return item

        return None