internal static bool TryGetWordCompletionData(this ITextView textView, out VimWordCompletionData wordCompletionData) => textView.Properties.TryGetProperty(WordCompletionDataSessionKey, out wordCompletionData);
internal static void SetWordCompletionData(this ITextView textView, VimWordCompletionData wordCompletionData) => textView.Properties[WordCompletionDataSessionKey] = wordCompletionData;