if (wrapper.getCause() instanceof Error) {
        throw new ExecutionError((Error) wrapper.getCause());
      }
      /*
       * It's an Exception. (Or it's a non-Error, non-Exception Throwable. From my survey of such
       * classes, I believe that most users intended to extend Exception, so we'll treat it like an
       * Exception.)
       */
      throw new UncheckedExecutionException(wrapper.getCause());
    }

  fun keyWithCarriageReturnNotPermitted(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    assertFailsWith<IllegalArgumentException> {
      cache.edit("my\rkey")
    }
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun createNewEntryWithTooFewValuesFails(parameters: Pair<FileSystem, Boolean>) {