How would one open an iMessage app extension from the hosting application?

Question

I'm trying to open an iMessage extension application from the main hosting extension using URL in the following manner,

if UIApplication.shared.canOpenURL(url){
  UIApplication.shared.open(url)
}else{
  print("unable to open URL")
}

I added the url scheme to the info.plist of the iMessage app extension however it doesn't seem to work, and being that an iMessage app is hosted in iMessage would I need to adjust the url scheme to first navigate to iMessage. I appreciate any advice.