Caused by: java.lang.NullPointerException: Cannot invoke "java.util.Map.keySet()" because the return value of "io.swagger.v3.oas.models.media.Discriminator.getMapping ...
Excecuting main (see reproductions steps) results in ExecutionException with a NPE as cause. Exception in thread "main" java.util.concurrent.ExecutionException: ...
The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Sign up for it here. When Vladimir Putin met ...
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