@class NSMutableDictionary, NSObject; @protocol OS_dispatch_queue; @interface NUSchemaRegistry : NSObject { NSObject<OS_dispatch_queue> *_queue; NSMutableDictionary *_schemas; NSMutableDictionary *_versions; } + (id)sharedRegistry; - (id)init; - (BOOL)registerSchema:(id)a0 error:(out id *)a1; - (void)_registerBuiltInSchemas; - (id)latestVersionWithNameSpace:(id)a0 name:(id)a1; - (id)_latestVersionWithOriginalIdentifier:(id)a0; - (BOOL)_registerVersion:(id)a0 withOriginalIdentifier:(id)a1 error:(out id *)a2; - (id)_schemaWithIdentifier:(id)a0; - (id)versionsCompatibleWithIdentifier:(id)a0; - (BOOL)_registerSchema:(id)a0 error:(out id *)a1; - (id)_allVersionsWithOriginalIdentifier:(id)a0 upToVersion:(id)a1; - (BOOL)registerSchemas:(id)a0 error:(out id *)a1; - (void).cxx_destruct; - (id)schemaWithIdentifier:(id)a0; @end