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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 AddFiles(self, hash_id_metadatas):
 """Adds multiple files to the file store. Args: hash_id_metadatas: A dictionary mapping hash ids to file metadata (a tuple of hash client path and blob references). """

    for hash_id, metadata in iteritems(hash_id_metadatas):
      self.AddFile(hash_id, metadata)