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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 storage_volume_attachments(self):
 """ Gets the StorageVolumeAttachments API client. Returns: StorageVolumeAttachments: """

        if not self.__storage_volume_attachments:
            self.__storage_volume_attachments = StorageVolumeAttachments(self.__connection)
        return self.__storage_volume_attachments