How to get batch number of item by api?

How to get batch number of item by api?

Hi there,

Is there any way to get batch number of item by api? 
When I call the https://www.zoho.com/books/api/v3/#Items_Get_an_item , I can get a result which has warehouses property. The one of warehouses data have batches property is blank of array.
I don't know the batches property is the correct answer because of nothing anywhere in doc.
Of course I can see batch numbers at Batch Details tab of an item in the books client.

I'm newbie as ZOHO so I hope someone teach me correct ZOHO world.

Thank you for your help.