def add_image(options={})
      if options[:end_at]
        TwoCellAnchor.new(self, options).add_pic(options)
      else
        OneCellAnchor.new(self, options)
      end
      @anchors.last.object
    end
def add_image(options={})
      if options[:end_at]
        TwoCellAnchor.new(self, options).add_pic(options)
      else
        OneCellAnchor.new(self, options)
      end
      @anchors.last.object
    end
Creates a new Drawing object
 @param [Worksheet] worksheet The worksheet that owns this drawing
 Adds an image to the chart If th end_at option is specified we create a two cell anchor. By default we use a one cell anchor.
 @note The recommended way to manage images is to use Worksheet.add_image. Please refer to that method for documentation.
 @see Worksheet#add_image
 @return [Pic]