bodyMarkup property
Supports markup in the body text. The markup is XML-based, and consists of a small subset of HTML along with a few additional tags. For more information, see Desktop Notifications Specification https://specifications.freedesktop.org/notification-spec/latest/ar01s04.html If marked up text is sent to a server that does not give this cap, the markup will show through as regular text so must be stripped clientside.
Implementation
final bool bodyMarkup;