code: func WithDCPin(val string) func(Config) {
  	return func(c Config) {
  		d, ok := c.(*SSD1306Driver)
  		if ok {
  			d.DCPin = val
  		} else {
  			panic("unable to set dc pin for ssd1306")
  		}
  	}
  }
docs: // WithDCPin option sets the SSD1306Driver DC Pin option.