showROIs () {
    console.info('show ROIs')
    this[_drawingLayer].setVisible(true)
    this[_annotationManager].setVisible(true)
  }
/**
   * Shows annotated regions of interest such that they become visible
   *  on the viewport ontop of the images.
   */
Shows annotated regions of interest such that they become visible
on the viewport ontop of the images.
Shows annotated regions of interest such that they become visible on the viewport ontop of the images .
showROIs () {
    console.info('show ROIs')
    this[_drawingLayer].setVisible(true)
    this[_annotationManager].setVisible(true)
  }
showROIs ( ) { console . info ( 'show ROIs' ) this [ _drawingLayer ] . setVisible ( true ) this [ _annotationManager ] . setVisible ( true ) }
Shows annotated regions of interest such that they become visible
  on the viewport ontop of the images.
Shows annotated regions of interest such that they become visible on the viewport ontop of the images .