The template with this id, or undefined — absence is a fact, never a fallback to the first one: a session asked to build from a template nobody ships must say so, not quietly come up at some other size.
undefined
the template id
the template, or undefined
The template with this id, or
undefined— absence is a fact, never a fallback to the first one: a session asked to build from a template nobody ships must say so, not quietly come up at some other size.