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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 RemoveObject(self, identifier):
 """Removes a cached object based on the identifier. This method ignores the cache value reference count. Args: identifier (str):
 VFS object identifier. Raises: KeyError: if the VFS object is not found in the cache. """

    if identifier not in self._values:
      raise KeyError('Missing cached object for identifier: {0:s}'.format(
          identifier))

    del self._values[identifier]