I have an existing multi-tenant heroku app that uses wildcard subdomains to route requests currently serving the following types of requests below over https/ssl using a wildcard ssl certificate

https://app1.example.com https://app2.example.com

Is it possible to add another seperate single domain ssl certificate to serve requests on a url like:

https://app3.custom-domain.com

Assume all requests are being handled by a single dyno

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