ENH: Add function that run any callback using broker data instead of strema.
ENH: Add function that run any callback using broker data instead of strema.

sameera2004/bluesky,ericdill/bluesky,klauer/bluesky,dchabot/bluesky,dchabot/bluesky,ericdill/bluesky,klauer/bluesky,sameera2004/bluesky