@class NSDictionary; @interface CalItemMetadata : NSObject <NSSecureCoding> @property (class, readonly) BOOL supportsSecureCoding; @property (readonly, nonatomic) NSDictionary *unrecognizedProperties; + (id)metadataWithData:(id)a0; + (id)_whitelistedClassesForSecureCoding; + (BOOL)isRecognizedParameter:(id)a0 forProperty:(id)a1 inComponent:(id)a2; + (BOOL)isRecognizedProperty:(id)a0 inComponent:(id)a1; + (id)metadataWithICSComponent:(id)a0; + (BOOL)shouldSkipSavingUnrecognizedParametersForProperty:(id)a0 inComponent:(id)a1; - (id)init; - (void)encodeWithCoder:(id)a0; - (void).cxx_destruct; - (id)initWithCoder:(id)a0; - (void)applyToComponent:(id)a0; - (id)dataRepresentationWithExistingMetaData:(id)a0; - (id)initWithICSComponent:(id)a0; - (id)propertyValueForComparison:(id)a0 propertyKey:(id)a1; @end