type MSS map[string]string

// Get returns the value for the given key.
func (m *MSS) Get(key string) string {
	if m == nil {
		return ""
	}
	return (*m)[key]
}

// Set a key, value pair.
func (m *MSS) Set(key, value string) {
	if m == nil {
		*m = mssPool.Get().(map[string]string)
	}
	(*m)[key] = value
}

// UnmarshalMsg deserializes m from the provided byte slice and returns the