Hmmm, it seems that this is actually supported, although documentation on how to use it is missing from our base API (Bug #1542216)
Once the docs have been updated I'll report back on what it should look like in JS.
Hmmm, it seems that this is actually supported, although documentation on how to use it is missing from our base API (Bug #1542216)
Once the docs have been updated I'll report back on what it should look like in JS.