onDrawEnd (event) {
    const feature = event.feature
    if (this._isValidFeature(feature)) {
      const featureId = feature.getId()
      const markup = this.get(featureId)
      if (markup) {
        markup.element.className = 'ol-tooltip ol-tooltip-static'
        this._markups.set(featureId, markup)
      }
    }
  }
/**
   * This event is responsible assign markup classes on drawEnd event
   *
   * @param {object} event The event
   */
This event is responsible assign markup classes on drawEnd event
@param {object} event The event
This event is responsible assign markup classes on drawEnd event @param { object } event The event
onDrawEnd (event) {
    const feature = event.feature
    if (this._isValidFeature(feature)) {
      const featureId = feature.getId()
      const markup = this.get(featureId)
      if (markup) {
        markup.element.className = 'ol-tooltip ol-tooltip-static'
        this._markups.set(featureId, markup)
      }
    }
  }
onDrawEnd ( event ) { const feature = event . feature if ( this . _isValidFeature ( feature ) ) { const featureId = feature . getId ( ) const markup = this . get ( featureId ) if ( markup ) { markup . element . className = 'ol-tooltip ol-tooltip-static' this . _markups . set ( featureId , markup ) } } }
This event is responsible assign markup classes on drawEnd event
 @param {object} event The event
This event is responsible assign markup classes on drawEnd event @param { object } event The event