Explicitly state we should overwrite the destroyable? method
Explicitly state we should overwrite the destroyable? method

robinwhittleton/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,alphagov/whitehall,ggoral/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,askl56/whitehall,askl56/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,ggoral/whitehall,robinwhittleton/whitehall,ggoral/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall