Please look at this post: https://community.esri.com/t5/arcgis-api-for-javascript/can-you-access-a-portaliems-tags-from-a-webm...
Oh no. I've double posted this question. I am trying to delete this post now. Please reply to: https://community.esri.com/t5/arcgis-api-for-javascript/can-you-access-a-portaliems-tags-from-a-webm...