private @NotNull TokenSet getTokenSet(@NotNull String key, @NotNull Function<? super PythonDialectsTokenSetContributor, ? extends TokenSet> getter) {
    return myCache.computeIfAbsent(key, __ -> orSets(getter));
  }
private @NotNull TokenSet getTokenSet(@NotNull String key, @NotNull Function<? super PythonDialectsTokenSetContributor, ? extends TokenSet> getter)