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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 whoami(self):
 """ Get information about the access token. Official docs: https://monzo.com/docs/#authenticating-requests :returns: access token details :rtype: dict """

        endpoint = '/ping/whoami'
        response = self._get_response(
            method='get', endpoint=endpoint,
        )

        return response.json()