Whether to treat the chats as a blacklist instead of as a whitelist (default).
This means that every chat will be handled except those specified in chats
which will be ignored if blacklistChats:true.
A callable function that should accept the event as input
parameter, and return a value indicating whether the event
should be dispatched or not (any truthy value will do, it
does not need to be a bool). It works like a custom filter:
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May be one or more entities (username/peer/etc.), preferably IDs.
By default, only matching chats will be handled.