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1. Before returning the response , we will iterate over courses objects.
2. Get batchId from each courses Object and call API to get bulk batch Details.
3. create and populate batchMetaData Map with the requested metadata attributes.
4. Append it to the coursesObjectWe will again iterate over UserCourses Object and append the required meta data.
5. Do it for all courses Object.
6. return the response.

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