public static void checkCompleted()

in src/main/java/com/spotify/futures/CompletableFutures.java [261:265]

• 5 lines of code
• 2 McCabe index (conditional complexity)

  public static void checkCompleted(CompletionStage<?> stage) {
    if (!stage.toCompletableFuture().isDone()) {
      throw new IllegalStateException("future was not completed");
    }
  }