code: func (v *Image) SetPixelSize(pixelSize int) {
  	C.gtk_image_set_pixel_size(v.native(), C.gint(pixelSize))
  }
docs: // TODO(jrick) GIcon
  /*
  func (v *Image) SetFromGIcon() {
  }
  */
  // SetPixelSize() is a wrapper around gtk_image_set_pixel_size().