private static bool InterfaceInvocation10(IPoint1 p) {
   int ret = p.getXMultY1();
   if (ret != 10) return false;
   return true;
 }
 private static bool InterfaceInvocation8(IPoint1 p) {
   int ret = p.getXPlusY1();
   if (ret != 7) return false;
   return true;
 }
 private static bool InterfaceInvocation9(IPoint1 p) {
   int ret = p.getXMinusY1();
   if (ret != 3) return false;
   return true;
 }
 private static bool InterfaceInvocation7(IPoint1 p) {
   int ret = p.getY1();
   if (ret != 2) return false;
   return true;
 }