I was trying to implement FCM notification for a chat app and I want to achieve "WhatsApp-like" notification where the notification will be grouped by conversation.
Say when Alice replied to a conversation with Bob inside, Bob will receive a notification with the body "Alice: the content". But if Alice quickly reply to the conversation again, Bob will get another new notification but I just want to append the new reply onto the prev notification instead.
How can I achieve that?
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