Q: How to add the the addon using the REST API. Thanks to Conor Macpherson.
A: Here is the example request and request body:
PUT https://test.atlassian.net/wiki/rest/api/content/<PAGE_ID>?expand=body.storage
{
"type": "page",
"title": "page-name",
"version": {
"number": 19
},
"body": {
"storage": {
"value": "<ac:structured-macro ac:name=\"swagger-open-api-macro\"><ac:plain-text-body><![CDATA[<YOUR-SWAGGER-DEFINITION-HERE>]]></ac:plain-text-body></ac:structured-macro>",
"representation": "storage"
}
}
}