Optional[markerInternal unique marker ID. This ID is used to identify markers in the annotation when updating, etc.
OptionalnotesAdditional information about the marker.
OptionalopacityMarker's opacity.
OptionalstrokeMarker's stroke (outline) color.
OptionalstrokeMarker's stroke (outline) dash array.
OptionalstrokeMarker's stroke (outline) width.
Marker's type name.
Represents marker's state used to save and restore state.
The state can then be serialized and stored for future use like to continue annotation in the future, display it in a viewer or render as a static image.