Add `using static` tests
Add `using static` tests

KevinRansom/roslyn,diryboy/roslyn,wvdd007/roslyn,gafter/roslyn,jasonmalinowski/roslyn,panopticoncentral/roslyn,KevinRansom/roslyn,heejaechang/roslyn,mavasani/roslyn,mgoertz-msft/roslyn,AmadeusW/roslyn,dotnet/roslyn,panopticoncentral/roslyn,AlekseyTs/roslyn,sharwell/roslyn,KirillOsenkov/roslyn,bartdesmet/roslyn,KirillOsenkov/roslyn,dotnet/roslyn,wvdd007/roslyn,shyamnamboodiripad/roslyn,AmadeusW/roslyn,AlekseyTs/roslyn,physhi/roslyn,stephentoub/roslyn,mavasani/roslyn,CyrusNajmabadi/roslyn,mgoertz-msft/roslyn,jasonmalinowski/roslyn,gafter/roslyn,stephentoub/roslyn,dotnet/roslyn,heejaechang/roslyn,heejaechang/roslyn,gafter/roslyn,CyrusNajmabadi/roslyn,mavasani/roslyn,ErikSchierboom/roslyn,AmadeusW/roslyn,diryboy/roslyn,shyamnamboodiripad/roslyn,tannergooding/roslyn,weltkante/roslyn,eriawan/roslyn,tannergooding/roslyn,panopticoncentral/roslyn,bartdesmet/roslyn,jasonmalinowski/roslyn,CyrusNajmabadi/roslyn,physhi/roslyn,tmat/roslyn,mgoertz-msft/roslyn,diryboy/roslyn,bartdesmet/roslyn,ErikSchierboom/roslyn,KirillOsenkov/roslyn,ErikSchierboom/roslyn,AlekseyTs/roslyn,weltkante/roslyn,tmat/roslyn,KevinRansom/roslyn,tmat/roslyn,eriawan/roslyn,stephentoub/roslyn,sharwell/roslyn,wvdd007/roslyn,weltkante/roslyn,eriawan/roslyn,physhi/roslyn,sharwell/roslyn,tannergooding/roslyn,shyamnamboodiripad/roslyn