Support to generate lots data for testing purpose

*Description*:
>Describe the desired behavior, what scenario it enables and how it
would be used.


[optional *Relevant Links*:]
>Any extra documentation required to understand the issue.

Start by reviewing the attached image and the repository's API-testing and mock-server entry points. The issue does not specify the data types, generation interface, scale, or acceptance criteria, so define those requirements before identifying the implementation and tests needed to verify the feature.

Written by the indexing model from the issue text.