typedef NSDictionary *(^YapDatabaseSecondaryIndexWithObjectBlockSwiftCompatible)(YapDatabaseReadTransaction *transaction, NSString *collection, NSString *key, id object);

@interface YapDatabaseSecondaryIndexHandler (Swift3Compatibility)

+ (instancetype)withDictionaryReturningObjectBlock:(YapDatabaseSecondaryIndexWithObjectBlockSwiftCompatible)block;

@end