move(delta) {
        let newMin = this._lastVisibleRange.min + delta;
        let newMax = this._lastVisibleRange.max + delta;
        if (newMin < 0 || newMax > 1) return;
		this.setVisibleRange(newMin, newMax);
	}
/**
     * Change the visible range in the x position.
     * @param {number} delta Change in the x position.
     */
Change the visible range in the x position.
@param {number} delta Change in the x position.
Change the visible range in the x position . @param { number } delta Change in the x position .
move(delta) {
        let newMin = this._lastVisibleRange.min + delta;
        let newMax = this._lastVisibleRange.max + delta;
        if (newMin < 0 || newMax > 1) return;
		this.setVisibleRange(newMin, newMax);
	}
move ( delta ) { let newMin = this . _lastVisibleRange . min + delta ; let newMax = this . _lastVisibleRange . max + delta ; if ( newMin < 0 || newMax > 1 ) return ; this . setVisibleRange ( newMin , newMax ) ; }
Change the visible range in the x position.
Change the visible range in the x position .