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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 connect_or_create(self, overwrite=False):
 """ Return a connection to the database if it exists, otherwise create it. Overwrite the existing database if `overwrite` is True. """

        connection = self._get_connection()
        if connection:
            return connection
        else:
            return self.create(overwrite=overwrite)