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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 AddShadow(self, fileset):
 """Add the shadow entries to the shadow store."""

    shadow = fileset.get("/etc/shadow")
    if shadow:
      self._ParseFile(shadow, self.ParseShadowEntry)
    else:
      logging.debug("No /etc/shadow file.")