code: public void setMarkerInterface(Class<?> superClass) {
          this.markerInterface = superClass;
          if (Marker.class.isAssignableFrom(superClass)) {
              mapperHelper.registerMapper(superClass);
          }
      }
docs: This property specifies the parent that the scanner will search for.
  <p>
  The scanner will register all interfaces in the base package that also have the
  specified interface class as a parent.
  <p>
  Note this can be combined with annotationClass.
  
  @param superClass parent class