This would still have everything in a single object correct? For elastic search bulk it appears to have to be newline delimitted json passed to the request.

{"index": {"_index": "bulk_test", "_type" : "test"}\n
{"col1" : "val1"}\n
{"index": {"_index": "bulk_test", "_type" : "test"}\n
{"col1" : "val2"}\n

How would you build and pass something like this in vibe?