code: def get_all(self, keys):
          
          check_not_none(keys, "keys can't be None")
          if not keys:
              return ImmediateFuture({})
  
          partition_service = self._client.partition_service
          partition_to_keys = {}
  
          for key in keys:
              check_not_none(key, "key can't be None")
              key_data = self._to_data(key)
              partition_id = partition_service.get_partition_id(key_data)
              try:
                  partition_to_keys[partition_id][key] = key_data
              except KeyError:
                  partition_to_keys[partition_id] = {key: key_data}
  
          return self._get_all_internal(partition_to_keys)
docs: Returns the entries for the given keys.
  
          **Warning:
          The returned map is NOT backed by the original map, so changes to the original map are NOT reflected in the
          returned map, and vice-versa.**
  
          **Warning 2: This method uses __hash__ and __eq__ methods of binary form of the key, not the actual implementations
          of __hash__ and __eq__ defined in key's class.**
  
          :param keys: (Collection), keys to get.
          :return: (dict), dictionary of map entries.