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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_by_identifier(self, identifier):
 """Gets blocks by identifier Args: identifier (str):
 Should be any of: username, phone_number, email. See: https://auth0.com/docs/api/management/v2#!/User_Blocks/get_user_blocks """


        params = {'identifier': identifier}

        return self.client.get(self._url(), params=params)