86   bool Empty() const { return Empty_(); }  in Empty()
100   virtual bool Empty_() const = 0;
133   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
168   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
201   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
267   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
377   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
429   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
525   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
670   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
854   virtual bool Empty_() const { return Empty(); }  in Empty_()  function
927   virtual bool Empty_() const { return Empty(); }  in Empty_()  function