The marker bar element
Resolves a marker track, or its id, to its state; undefined when it isn't added to the player
Current state of the marker bar
Shows another marker track on the marker bar
Marker track, or its id, already added to the player
Returns the ids of the marker tracks shown on the marker bar
Stops showing a marker track on the marker bar
Marker track id
Shows or hides the marker bar
Marker bar visibility
A marker bar added to a control bar with ControlBarMarkerBarApi.addMarkerBar