Should PAGImageView.h remove NS_ASSUME_NONNULL_BEGIN declaration?

[ScriptBloom]

I found that PAGImageView.h declare NS_ASSUME_NONNULL_BEGIN but PAGView.h not.

This may cause which I can call [PAGView setPath:nil] or [PAGView setComposition:nil], but I cannot call [PAGImageView setPath:nil] or [PAGImageView setComposition:nil] to clean the resource pag of PAGImageView.

[domchen]

Thank you for your feedback. It has been removed: #2456