docs: protected static MethodHandle makeFallBack(MutableCallSite mc, Class<?> sender, String name, int callID, MethodType type, boolean safeNavigation, boolean thisCall, boolean spreadCall) {
              MethodHandle mh = MethodHandles.insertArguments(SELECT_METHOD, 0, mc, sender, name, callID, safeNavigation, thisCall, spreadCall, /*dummy receiver:*/ 1);
              mh =    mh.asCollector(Object[].class, type.parameterCount()).
                      asType(type);
              return mh;
          }