ASTDemangler: Add test for private type in extension of foreign type
ASTDemangler: Add test for private type in extension of foreign type

This was one of the cases that TypeReconstruction did not support;
let's make sure its covered by a test.

hooman/swift,shajrawi/swift,aschwaighofer/swift,rudkx/swift,sschiau/swift,jckarter/swift,tkremenek/swift,airspeedswift/swift,shahmishal/swift,nathawes/swift,JGiola/swift,karwa/swift,amraboelela/swift,jmgc/swift,gribozavr/swift,amraboelela/swift,airspeedswift/swift,amraboelela/swift,nathawes/swift,jckarter/swift,lorentey/swift,sschiau/swift,karwa/swift,nathawes/swift,roambotics/swift,aschwaighofer/swift,airspeedswift/swift,roambotics/swift,tkremenek/swift,jmgc/swift,allevato/swift,hooman/swift,hooman/swift,sschiau/swift,shahmishal/swift,rudkx/swift,apple/swift,aschwaighofer/swift,CodaFi/swift,gribozavr/swift,xwu/swift,tkremenek/swift,xedin/swift,ahoppen/swift,airspeedswift/swift,devincoughlin/swift,stephentyrone/swift,benlangmuir/swift,xwu/swift,gregomni/swift,JGiola/swift,karwa/swift,JGiola/swift,gregomni/swift,allevato/swift,atrick/swift,parkera/swift,shahmishal/swift,hooman/swift,shajrawi/swift,apple/swift,glessard/swift,shajrawi/swift,nathawes/swift,devincoughlin/swift,CodaFi/swift,CodaFi/swift,lorentey/swift,allevato/swift,practicalswift/swift,xedin/swift,sschiau/swift,ahoppen/swift,harlanhaskins/swift,ahoppen/swift,hooman/swift,stephentyrone/swift,lorentey/swift,xwu/swift,tkremenek/swift,xwu/swift,airspeedswift/swift,shahmishal/swift,jckarter/swift,jckarter/swift,roambotics/swift,lorentey/swift,harlanhaskins/swift,xwu/swift,gribozavr/swift,shahmishal/swift,stephentyrone/swift,rudkx/swift,sschiau/swift,jmgc/swift,xedin/swift,apple/swift,tkremenek/swift,shajrawi/swift,shahmishal/swift,harlanhaskins/swift,xedin/swift,shajrawi/swift,gregomni/swift,apple/swift,tkremenek/swift,practicalswift/swift,ahoppen/swift,tkremenek/swift,amraboelela/swift,parkera/swift,CodaFi/swift,harlanhaskins/swift,glessard/swift,practicalswift/swift,amraboelela/swift,atrick/swift,devincoughlin/swift,gribozavr/swift,amraboelela/swift,gribozavr/swift,atrick/swift,airspeedswift/swift,parkera/swift,nathawes/swift,stephentyrone/swift,gregomni/swift,parkera/swift,rudkx/swift,benlangmuir/swift,glessard/swift,sschiau/swift,parkera/swift,glessard/swift,stephentyrone/swift,jmgc/swift,karwa/swift,rudkx/swift,apple/swift,glessard/swift,lorentey/swift,harlanhaskins/swift,karwa/swift,practicalswift/swift,xedin/swift,roambotics/swift,xedin/swift,roambotics/swift,practicalswift/swift,benlangmuir/swift,benlangmuir/swift,xedin/swift,parkera/swift,karwa/swift,allevato/swift,karwa/swift,shajrawi/swift,atrick/swift,roambotics/swift,devincoughlin/swift,practicalswift/swift,JGiola/swift,jckarter/swift,jmgc/swift,airspeedswift/swift,jmgc/swift,devincoughlin/swift,gribozavr/swift,amraboelela/swift,practicalswift/swift,ahoppen/swift,hooman/swift,gregomni/swift,shajrawi/swift,nathawes/swift,nathawes/swift,glessard/swift,allevato/swift,gregomni/swift,devincoughlin/swift,devincoughlin/swift,aschwaighofer/swift,ahoppen/swift,devincoughlin/swift,sschiau/swift,CodaFi/swift,parkera/swift,atrick/swift,hooman/swift,aschwaighofer/swift,karwa/swift,CodaFi/swift,gribozavr/swift,xwu/swift,JGiola/swift,parkera/swift,benlangmuir/swift,allevato/swift,lorentey/swift,xwu/swift,practicalswift/swift,harlanhaskins/swift,shajrawi/swift,rudkx/swift,aschwaighofer/swift,shahmishal/swift,CodaFi/swift,atrick/swift,harlanhaskins/swift,aschwaighofer/swift,jmgc/swift,jckarter/swift,allevato/swift,gribozavr/swift,stephentyrone/swift,JGiola/swift,lorentey/swift,stephentyrone/swift,lorentey/swift,benlangmuir/swift,jckarter/swift,apple/swift,sschiau/swift,shahmishal/swift,xedin/swift