When you add this post-function to a transition and trigger the transition, a message is displayed to the user triggering the transaction, as a “flag” in the top right corner of the issue view page. You can also use Nunjucks annotations to insert issue, transition, and current user information into the Message body and Action type, using the 'issue', 'transition' and 'currentUser' variables, respectively. You can customize the post-function using the following options:
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