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If Lightstreamer Data Adapter interface is implemented correctly,
any snapshot event sent in the middle of the update flow for an item in MERGE mode
cannot add any new information and might even...

This is what I meant by .
The isSnapshot flag is the last parameter to update or smartUpdate.
This does not refer to the first, "true" snapshot event.

By snapshot we mean one or multiple update events
that don't represent real-time updates
but rather the state of the item at time of subscription.

Hence, in response to a call to subscribe(),...