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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 find_slot(self, wanted, slots=None):
 """ Searches the given slots or, if not given, active hotbar slot, hotbar, inventory, open window in this order. Args: wanted: function(Slot) or Slot or itemID or (itemID, metadata) Returns: Optional[Slot]: The first slot containing the item or None if not found. """

        for slot in self.find_slots(wanted, slots):
            return slot
        return None