Can't see BlueprintFunctionLibrary function in blueprint

I need to use static TArray GetBindings(UMovieSceneSequence* Sequence);
The function is in UMovieSceneSequenceExtensions .
But I can’t find it in blueprint(),disable context sentitive does’t work .
I have notice that the Ufunction is meta = (ScriptMethod),what it means? Epic Doucment don’t show the way it works.
Thanks.