lxd/config/map.go
func (m *Map) GetInt64(name string) int64 {
	m.schema.assertKeyType(name, Int64)
	n, err := strconv.ParseInt(m.GetRaw(name), 10, 64)
	if err != nil {
		panic(fmt.Sprintf("cannot convert to int64: %v", err))
	}
	return n
}
func (m *Map) GetInt64(name string) int64 {
	m.schema.assertKeyType(name, Int64)
	n, err := strconv.ParseInt(m.GetRaw(name), 10, 64)
	if err != nil {
		panic(fmt.Sprintf("cannot convert to int64: %v", err))
	}
	return n
}
// GetInt64 returns the value of the given key, which must be of type Int64.