@class NSUUID; @interface _EXExtensionInstanceIdentifier : NSObject <NSSecureCoding> @property (class, readonly) BOOL supportsSecureCoding; @property (readonly) NSUUID *identifier; @property (readonly) BOOL isDefault; + (id)defaultInstanceIdentifier; - (BOOL)isDefault; - (id)initWithIdentifier:(id)a0; - (id)init; - (unsigned long long)hash; - (void)encodeWithCoder:(id)a0; - (id)description; - (BOOL)isEqualInstanceIdentifier:(id)a0; - (void).cxx_destruct; - (BOOL)isEqual:(id)a0; - (id)initWithCoder:(id)a0; @end