API: Get Line items from Invoice.

API: Get Line items from Invoice.

Hello Zoho Folks,

I"ve started using ZOHO Books for my firm. For our needs, it seems like a time saver if we create invoices directly and not Sales Order -> Invoice. Given this, I am now writing a script in python to collect the list of items that are associated with the invoice. But, I don't see how this is possible. I do see that if a sales order is created, the API to get SalesOrder:
https://www.zoho.com/books/api/v3/salesorders/#get-a-sales-order
lists the "line items". Any pointers of how this can be accomplished?