We want to use new iOS 14 PencilKit vector capabilities in our app. However, our current drawing component is always fixed-width. If we use dynamic brush width, like PencilKit has, it will look different on our other platforms. Is there a way to make PKInkingTool having fixed width? I tried swizzling methods like defaultWidthForInkType:, but my swizzled methods are never called. @implementation PKInkingTool (Tracking) (void)load {     [super load];     static dispatch_once_t onceToken;     dispatch_once(&onceToken, ^{         const char *className = [NSStringFromClass(self) UTF8String];         Class class = objc_getMetaClass(className);         SEL originalSelector = @selector(defaultWidthForInkType:);         SEL swizzledSelector = @selector(ed_defaultWidthForInkType:);         Method originalMethod = class_getClassMethod(class, originalSelector);         Method swizzledMethod = class_getClassMethod(class, swizzledSelector);         BOOL didAddMethod =             class_addMethod(class,                 originalSelector,                 method_getImplementation(swizzledMethod),                 method_getTypeEncoding(swizzledMethod));         if (didAddMethod) {             class_replaceMethod(class,                 swizzledSelector,                 method_getImplementation(originalMethod),                 method_getTypeEncoding(originalMethod));         } else {             method_exchangeImplementations(originalMethod, swizzledMethod);         } } (CGFloat)ed_defaultWidthForInkType:(PKInkType)inkType {     return 15.0; } @end