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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 Find(self, find_specs=None):
 """Searches for matching keys within the Windows Registry. Args: find_specs (list[FindSpec]):
 find specifications. where None will return all allocated Windows Registry keys. Yields: str: key path of a matching Windows Registry key. """

    if not find_specs:
      find_specs = [FindSpec()]

    registry_key = self._win_registry.GetRootKey()
    for matching_path in self._FindInKey(registry_key, find_specs, 0):
      yield matching_path