How can I add outgoing webhook in confluence

[Dario_B]

Maybe is a bit too late, but I believe something similar has been discussed in the below thread:

Are webhooks available to add-ons in Confluence Server

Are web hooks available in confluence server? They can be registered through the descriptor file in cloud, and through the REST API in JIRA, but I cannot find a way to register a web hook for my plugin in Confluence server. Is this possible?