question: public List < IMessage > deleteBefore ( int index , int amount ) throws RateLimitException , DiscordException , MissingPermissionsException { return deleteFromRange ( Math . max ( 0 , index - amount ) , index + 1 ) ; }
target:  Bulk deletes messages in a sub list created from the provided index to the beginning of the list. (Note: Only 100 messages can be deleted at a time).