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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_authorization_url(self):
 """Get the authorization Url for the current client."""

        return self._format_url(
            OAUTH2_ROOT + 'authorize',
            query = {
                'response_type': 'code',
                'client_id': self.client.get('client_id', ''),
                'redirect_uri': self.client.get('redirect_uri', '')
            })