But I would like to see an example of these being used in a module because it’s not clear to me what exactly the inputs should look like based on that documentation.
I was hoping Slicer might have built-in functions that I can call in a module to save the center and radius of vtkMRMLAnnotationROINode to an xml file, or to read the center and radius from an xml file and set the initial position of the vtkMRMLAnnotationROINode to the values read from the file.
Although I know how to write functions that do these things, I was wondering if there is an easier way.