private static bool InterfaceInvocation15(IPoint9 p) {
   int ret = p.getXMultY9();
   if (ret != 10) return false;
   return true;
 }
 private static bool InterfaceInvocation13(IPoint9 p) {
   int ret = p.getXPlusY9();
   if (ret != 7) return false;
   return true;
 }
 private static bool InterfaceInvocation14(IPoint9 p) {
   int ret = p.getXMinusY9();
   if (ret != -3) return false;
   return true;
 }
 private static bool InterfaceInvocation11(IPoint9 p) {
   int ret = p.getX9();
   if (ret != 2) return false;
   return true;
 }