Tolerant on purpose, and it returns unknown rather than guessing free. The subscription
envelope carries several products and their rate-plan naming has changed; a reader that treated
"no paid marker found" as proof of the free plan would report a confident wrong answer every time
the naming moved, which is worse than reporting that it could not tell.
Reads a Workers plan out of a subscription list.
Tolerant on purpose, and it returns
unknownrather than guessingfree. The subscription envelope carries several products and their rate-plan naming has changed; a reader that treated "no paid marker found" as proof of the free plan would report a confident wrong answer every time the naming moved, which is worse than reporting that it could not tell.