code: def md5(self):
          
          hasher = hashlib.md5()
          for key in sorted(self.data.keys()):
              hasher.update(self.data[key].md5().encode('utf-8'))
          md5 = hasher.hexdigest()
          return md5
docs: Get an MD5 reflecting everything in the DataStore.
  
          Returns
          ----------
          md5: str, MD5 in hexadecimal