private boolean roleAssignedInProduction(Production production, Person person) {
		for (Role role : production.getPlay().getRoles()) {
			if (role.getCast() != null) {
				if (role.getCast().contains(person)) {
					return true;
				}
			}
		}
		for (Role role : production.getNonActorRoles()) {
			if (role.getCast() != null) {
				if (role.getCast().contains(person)) {
					return true;
				}
			}
		}
		return false;
	}