44 class UsingDecl;  variable
2784   friend class UsingDecl;  variable
2787                   UsingDecl *Using, NamedDecl *Target)  in UsingShadowDecl()
2811                                  SourceLocation Loc, UsingDecl *Using,  in Create()
2846   UsingDecl *getUsingDecl() const;
2867 class UsingDecl : public NamedDecl, public Mergeable<UsingDecl> {
2887   UsingDecl(DeclContext *DC, SourceLocation UL,  in UsingDecl()  function
2981   static UsingDecl *Create(ASTContext &C, DeclContext *DC,
2987   static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2992   UsingDecl *getCanonicalDecl() override { return getFirstDecl(); }  in getCanonicalDecl()
2993   const UsingDecl *getCanonicalDecl() const { return getFirstDecl(); }  in getCanonicalDecl()