| Name | Type | Description |
|---|---|---|
n | int | Default: 2 |
Subscribe and return n independent async iterators.
Caller-driven fan-out: each branch's __anext__ either pops
from its own buffer or, under a shared asyncio.Lock, pulls
one item from the underlying cursor and distributes it to
every branch's buffer.
Number of branches to create. Must be >= 1.
