hideROIs () {
    console.info('hide ROIs')
    this[_drawingLayer].setVisible(false)
    this[_annotationManager].setVisible(false)
  }
/**
   * Hides annotated regions of interest such that they are no longer
   *  visible on the viewport.
   */
Hides annotated regions of interest such that they are no longer
visible on the viewport.
Hides annotated regions of interest such that they are no longer visible on the viewport .
hideROIs () {
    console.info('hide ROIs')
    this[_drawingLayer].setVisible(false)
    this[_annotationManager].setVisible(false)
  }
hideROIs ( ) { console . info ( 'hide ROIs' ) this [ _drawingLayer ] . setVisible ( false ) this [ _annotationManager ] . setVisible ( false ) }
Hides annotated regions of interest such that they are no longer
  visible on the viewport.
Hides annotated regions of interest such that they are no longer visible on the viewport .