It is more efficient to check for object containment violations at the IR
level instead of in the protocol handlers. OStatus containment is especially
a tricky situation, as the containment rules don't match those of IR and
ActivityPub.
Accordingly, we just always do a final containment check at the IR level
before the object is added to the IR object graph.
lain
Ariadne Conill
Egor
William Pitcock
Haelwenn (lanodan) Monnier
rinpatch