@interface RealityKit.__RKEntitySetOpacityAction : RealityKit.__RKEntityVisibilityAction {
void /* unknown type, empty encoding */ duration;
void /* unknown type, empty encoding */ opacity;
void /* unknown type, empty encoding */ fadeSubscription;
void /* unknown type, empty encoding */ initialOpacity;
void /* unknown type, empty encoding */ stepSize;
}
- (id)copyWithZone:(void *)a0;
@end