Subscription message.
delete(): voidDelete the subscription message to free resources when it is no longer needed. This is done automatically by iterating to the next result in the stream.
voidisDeleted(): booleanHas the message been deleted?
booleanreadonly isRefresh: booleanIs the message a refresh?
readonly dataSourceId: DataSourceIdThe data source of this message
readonly symbologyId: SymbologyIdThe symbology of symbol
readonly symbol: stringThe symbol
readonly topicType: TopicTypeThe type of the topic subscribed to
readonly permissionId: PermissionIdThe permission id
readonly updateId: numberThe update id
readonly eventType?: EventTypeThe type of event if this message is an update, otherwise undefined.
readonly updateType?: UpdateTypeThe type of update if this message is an update to a map topic, otherwise undefined.
readonly mapKey?: stringThe map key if this is an update to a specific map topic, otherwise undefined
readonly topicSubscriptionState: TopicSubscriptionStateThe topic subscription state
readonly fieldData: FieldDataThe field data of this message