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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_registration_id_info(self, registration_id):
 """ Returns details related to a registration id if it exists otherwise return None Args: registration_id: id to be checked Returns: dict: info about registration id None: if id doesn't exist """

        response = self.registration_info_request(registration_id)
        if response.status_code == 200:
            return response.json()
        return None