RCSMessage.Reaction A structure that represents a reaction to an RCS message. Declarationstruct Reaction TopicsInitializersinit(targetMessageID:operation:)init(targetMessageID:operation:isEndToEndEncrypted:)Instance PropertiesisEndToEndEncryptedoperationtargetMessageIDEnumerationsRCSMessage.Reaction.Operation RelationshipsConforms ToDecodableEncodableEquatableSendableSendableMetatype