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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 list_leases(self, prefix):
 """Retrieve a list of lease ids. Supported methods: LIST: /sys/leases/lookup/{prefix}. Produces: 200 application/json :param prefix: Lease prefix to filter list by. :type prefix: str | unicode :return: The JSON response of the request. :rtype: dict """

        api_path = '/v1/sys/leases/lookup/{prefix}'.format(prefix=prefix)
        response = self._adapter.list(
            url=api_path,
        )
        return response.json()