Update not-null handling
Update not-null handling

ppy/osu-framework,ppy/osu-framework,smoogipooo/osu-framework,peppy/osu-framework,ZLima12/osu-framework,ppy/osu-framework,peppy/osu-framework,peppy/osu-framework,smoogipooo/osu-framework,ZLima12/osu-framework