code: def extract(cls, padded):
          
          if padded.startswith("@{") and padded.endswith("}"):
              return padded[2:len(padded)-1]
          else:
              return padded
docs: Removes the surrounding "@{...}" from the name.
  
          :param padded: the padded string
          :type padded: str
          :return: the extracted name
          :rtype: str