I'm using the Slack API to send messages to channels using blocks. Some of these messages consist of quite a few blocks and are quite long, occasionally reaching nearly a full vertical screenful. Normally, long messages are automatically collapsed by Slack with a button to expand the message, but these messages are not. I'm assuming this is due to the fact that they are made up of multiple blocks. Is there a way to trigger long messages made up of blocks to get collapsed?
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