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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 get(self, dismiss=True):
 """Extract the object this key points to. Objects are not read or decompressed until this function is explicitly called. """


        try:
            return _classof(self._context, self._fClassName).read(self._source, self._cursor.copied(), self._context, self)
        finally:
            if dismiss:
                self._source.dismiss()