code: func (e *Env) Load(m map[string]string) {
  	if len(m) == 0 {
  		return
  	}
  	if e.env == nil {
  		e.env = make(map[string]string, len(m))
  	}
  	for k, v := range m {
  		e.Set(k, v)
  	}
  }
docs: // Load adds environment variables defined in a key/value map to an existing
  // environment.