* fix: Use property accessors on `Frame` * Format * Use `_Nonnull` * fix: Assume nonnull * Use `NS_ASSUME_NONNULL_BEGIN` more * Format C++
* fix: Use property accessors on `Frame` * Format * Use `_Nonnull` * fix: Assume nonnull * Use `NS_ASSUME_NONNULL_BEGIN` more * Format C++