[Sema] Prefer methods on DeclContext to casting
[Sema] Prefer methods on DeclContext to casting

modocache/swift,natecook1000/swift,allevato/swift,kstaring/swift,shajrawi/swift,gregomni/swift,hughbe/swift,devincoughlin/swift,JGiola/swift,tjw/swift,deyton/swift,jmgc/swift,huonw/swift,shajrawi/swift,natecook1000/swift,milseman/swift,modocache/swift,huonw/swift,lorentey/swift,alblue/swift,airspeedswift/swift,zisko/swift,jckarter/swift,shahmishal/swift,glessard/swift,shahmishal/swift,xwu/swift,allevato/swift,hooman/swift,tjw/swift,frootloops/swift,jmgc/swift,manavgabhawala/swift,kstaring/swift,gottesmm/swift,harlanhaskins/swift,therealbnut/swift,rudkx/swift,jckarter/swift,ben-ng/swift,swiftix/swift,modocache/swift,harlanhaskins/swift,jckarter/swift,JGiola/swift,stephentyrone/swift,practicalswift/swift,therealbnut/swift,tjw/swift,alblue/swift,OscarSwanros/swift,manavgabhawala/swift,xedin/swift,hooman/swift,zisko/swift,IngmarStein/swift,djwbrown/swift,hughbe/swift,shajrawi/swift,codestergit/swift,xwu/swift,JGiola/swift,nathawes/swift,practicalswift/swift,sschiau/swift,arvedviehweger/swift,danielmartin/swift,IngmarStein/swift,jckarter/swift,gottesmm/swift,amraboelela/swift,gribozavr/swift,bitjammer/swift,tkremenek/swift,xedin/swift,deyton/swift,danielmartin/swift,codestergit/swift,OscarSwanros/swift,roambotics/swift,airspeedswift/swift,bitjammer/swift,austinzheng/swift,uasys/swift,tjw/swift,tardieu/swift,parkera/swift,brentdax/swift,ben-ng/swift,calebd/swift,deyton/swift,gottesmm/swift,djwbrown/swift,devincoughlin/swift,lorentey/swift,hughbe/swift,jmgc/swift,kstaring/swift,roambotics/swift,Jnosh/swift,brentdax/swift,bitjammer/swift,return/swift,gregomni/swift,JaSpa/swift,tinysun212/swift-windows,benlangmuir/swift,karwa/swift,jopamer/swift,hughbe/swift,stephentyrone/swift,kperryua/swift,tinysun212/swift-windows,parkera/swift,shajrawi/swift,parkera/swift,karwa/swift,JaSpa/swift,Jnosh/swift,JGiola/swift,tardieu/swift,roambotics/swift,arvedviehweger/swift,bitjammer/swift,therealbnut/swift,Jnosh/swift,alblue/swift,djwbrown/swift,modocache/swift,gregomni/swift,tkremenek/swift,ahoppen/swift,ben-ng/swift,lorentey/swift,tkremenek/swift,milseman/swift,ahoppen/swift,atrick/swift,gmilos/swift,huonw/swift,Jnosh/swift,tinysun212/swift-windows,bitjammer/swift,hooman/swift,uasys/swift,aschwaighofer/swift,tjw/swift,stephentyrone/swift,kperryua/swift,rudkx/swift,ben-ng/swift,jtbandes/swift,ahoppen/swift,OscarSwanros/swift,roambotics/swift,felix91gr/swift,milseman/swift,xedin/swift,karwa/swift,austinzheng/swift,milseman/swift,hughbe/swift,sschiau/swift,benlangmuir/swift,shahmishal/swift,parkera/swift,kstaring/swift,tkremenek/swift,felix91gr/swift,alblue/swift,CodaFi/swift,jtbandes/swift,calebd/swift,swiftix/swift,jopamer/swift,stephentyrone/swift,nathawes/swift,shahmishal/swift,allevato/swift,brentdax/swift,amraboelela/swift,zisko/swift,austinzheng/swift,karwa/swift,jtbandes/swift,nathawes/swift,gmilos/swift,allevato/swift,return/swift,OscarSwanros/swift,gregomni/swift,therealbnut/swift,nathawes/swift,sschiau/swift,natecook1000/swift,sschiau/swift,gottesmm/swift,amraboelela/swift,jopamer/swift,return/swift,codestergit/swift,sschiau/swift,tinysun212/swift-windows,aschwaighofer/swift,ahoppen/swift,zisko/swift,aschwaighofer/swift,stephentyrone/swift,shajrawi/swift,brentdax/swift,calebd/swift,manavgabhawala/swift,shahmishal/swift,rudkx/swift,harlanhaskins/swift,gribozavr/swift,felix91gr/swift,austinzheng/swift,CodaFi/swift,alblue/swift,JaSpa/swift,djwbrown/swift,Jnosh/swift,aschwaighofer/swift,atrick/swift,austinzheng/swift,gottesmm/swift,allevato/swift,kperryua/swift,practicalswift/swift,natecook1000/swift,codestergit/swift,frootloops/swift,rudkx/swift,xwu/swift,shahmishal/swift,rudkx/swift,lorentey/swift,CodaFi/swift,practicalswift/swift,devincoughlin/swift,tjw/swift,danielmartin/swift,tardieu/swift,xedin/swift,karwa/swift,parkera/swift,devincoughlin/swift,ben-ng/swift,nathawes/swift,harlanhaskins/swift,ben-ng/swift,airspeedswift/swift,xedin/swift,kstaring/swift,hooman/swift,ahoppen/swift,IngmarStein/swift,airspeedswift/swift,frootloops/swift,CodaFi/swift,swiftix/swift,danielmartin/swift,IngmarStein/swift,jmgc/swift,gmilos/swift,gmilos/swift,jopamer/swift,sschiau/swift,tardieu/swift,kstaring/swift,jopamer/swift,lorentey/swift,tinysun212/swift-windows,JaSpa/swift,manavgabhawala/swift,milseman/swift,practicalswift/swift,aschwaighofer/swift,deyton/swift,arvedviehweger/swift,apple/swift,lorentey/swift,gottesmm/swift,deyton/swift,parkera/swift,xedin/swift,xedin/swift,felix91gr/swift,JGiola/swift,glessard/swift,devincoughlin/swift,manavgabhawala/swift,OscarSwanros/swift,natecook1000/swift,jtbandes/swift,therealbnut/swift,rudkx/swift,gmilos/swift,xwu/swift,huonw/swift,natecook1000/swift,practicalswift/swift,danielmartin/swift,return/swift,xedin/swift,xwu/swift,jopamer/swift,frootloops/swift,nathawes/swift,apple/swift,austinzheng/swift,IngmarStein/swift,jckarter/swift,jckarter/swift,manavgabhawala/swift,tjw/swift,frootloops/swift,arvedviehweger/swift,CodaFi/swift,benlangmuir/swift,aschwaighofer/swift,gribozavr/swift,return/swift,jckarter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