typed.go
func (t Typed) StringMust(key string) string {
	s, exists := t.StringIf(key)
	if exists == false {
		panic("expected string value for " + key)
	}
	return s
}
func (t Typed) StringMust(key string) string {
	s, exists := t.StringIf(key)
	if exists == false {
		panic("expected string value for " + key)
	}
	return s
}
func ( t Typed ) StringMust ( key string ) string { s , exists := t . StringIf ( key ) if exists == false { panic ( " " + key ) } return s }
// Returns an string or panics
Returns an string or panics