How is Wagyu beef killed?

Could you please elaborate on the process of how Wagyu beef is killed? I'm particularly interested in understanding the methods used to ensure the animal's welfare and the ethical considerations that are taken into account during this procedure. Is there a standardized approach to this, or does it vary depending on the farm or region? Additionally, I'm curious about any specific techniques or technologies that are employed to minimize stress and ensure a swift and humane end for the Wagyu cattle.