example_UTGetAllCoreTypesConstants.m

#import <Foundation/Foundation.h>
#import <UniformTypeIdentifiers/UniformTypeIdentifiers.h>

@interface UTType (MyPrivate)
+ (void)_enumerateAllDeclaredTypesUsingBlock:(void (^)(UTType *type, BOOL *stop))block;
@end

UT_EXPORT NSArray<UTType *> *_UTGetAllCoreTypesConstants(void);

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        for (UTType *type in _UTGetAllCoreTypesConstants()) {
            NSLog(@"%@", type);
        }
        
        [UTType _enumerateAllDeclaredTypesUsingBlock:^(UTType *type, BOOL *stop) {
            // *stop = YES;
            NSLog(@"%@", type);
        }];
    }
    return 0;
}