func (t Typed) StringOr(key string, d string) string {
	if value, exists := t.StringIf(key); exists {
		return value
	}
	return d
}
func (t Typed) StringOr(key string, d string) string {
	if value, exists := t.StringIf(key); exists {
		return value
	}
	return d
}
// Returns a string at the key, or the specified
// value if it doesn't exist or isn't a string