code: func (t Typed) MapIf(key string) (map[string]interface{}, bool) {
  	value, exists := t[key]
  	if exists == false {
  		return nil, false
  	}
  	if n, ok := value.(map[string]interface{}); ok {
  		return n, true
  	}
  	return nil, false
  }
docs: // Returns a map[string]interface at the key and whether
  // or not the key existed and the value was an map[string]interface{}