code: func (cb CommandBuffer) PresentDrawable(d Drawable) {
  	C.CommandBuffer_PresentDrawable(cb.commandBuffer, d.Drawable())
  }
docs: // PresentDrawable registers a drawable presentation to occur as soon as possible.
  //
  // Reference: https://developer.apple.com/documentation/metal/mtlcommandbuffer/1443029-presentdrawable.