We got the below answer from the sustaining engineering team on this issue.
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Hi Mohan,
Thank you for your time on call today. As discussed, the functionality that you are using is, unfortunately, not a part of our published SDK – we are unable to provide assistance for functionality that does not exist within our published interfaces.
We appreciate that this worked in a previous release, even though it is neither in our SDK nor supported in that release. It is unfortunate that you were provided this information via the DevTest Communities site as it has resulted in the development of tests that will not function when this internal code has changed.
We regret that we will not be able to address your issue as a defect since the call that you are using is not designed for direct use – we would suggest that, should this functionality be required, an enhancement request be made to add this to a future release. We will be more than happy to provide a document outlining the process for this.
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Please let us know if any workarounds could help us.