Send touch events to WKWebKit from other UIView

test.m

NSValue *value = [webView valueForKey:@"_contentView"];
WKContentView *content = [value nonretainedObjectValue];

UIWebTouchEventsGestureRecognizer *gesture = [[UIWebTouchEventsGestureRecognizer alloc] initWithTarget:content action:@selector(_webTouchEventsRecognized:) touchDelegate:content];
[gesture setDelegate:content];

[forwardView addGestureRecognizer:gesture];