@class NSString; @interface SXScrollPosition : NSObject <NSSecureCoding> @property (class, readonly) BOOL supportsSecureCoding; @property (readonly, nonatomic) NSString *jsonRepresentation; + (BOOL)jsonDictionaryRepresentationIsValid:(id)a0 exactly:(BOOL)a1; - (void)encodeWithCoder:(id)a0; - (id)dictionaryRepresentation; - (id)initWithCoder:(id)a0; - (id)initWithJSONRepresentation:(id)a0; - (id)initWithDictionaryRepresentation:(id)a0 exactly:(BOOL)a1; @end