pageTypes property
Specify the page types for this Teletext page. If you don't specify a value here, the service sets the page type to the default value Subtitle (PAGE_TYPE_SUBTITLE). If you pass through the entire set of Teletext data, don't use this field. When you pass through a set of Teletext pages, your output has the same page types as your input.
Implementation
final List<TeletextPageType>? pageTypes;