Get all matching elements using a
tailable cursor
. The stream will
not be completed unless the
Subscription
is
canceled
.
However, the stream may become dead, or invalid, if either the query returns no match or the cursor returns the
document at the "end" of the collection and then the application deletes that document.
A stream that is no longer in use must be
Disposable.dispose()
disposed} otherwise the
streams will linger and exhaust resources.
NOTE: Requires a capped collection.