code: def get_storage_items(self, address):
          
          storage = self._world_state[address]['storage']
          items = []
          array = storage.array
          while not isinstance(array, ArrayVariable):
              items.append((array.index, array.value))
              array = array.array
          return items
docs: Gets all items in an account storage
  
          :param address: account address
          :return: all items in account storage. items are tuple of (index, value). value can be symbolic
          :rtype: list[(storage_index, storage_value)]