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https://github.com/apache/libcloud/pull/18/files#L0R15 this pattern repeats in many drivers so we should add a base `JsonResponse` and `XmlResponse` classes which drivers can use or inherit from.
https://github.com/apache/libcloud/pull/18/files#L0R15 this pattern repeats in many drivers so we should add a base `JsonResponse` and `XmlResponse` classes which drivers can use or inherit from.