code: func (f EventFields) GetTime(key string) time.Time {
  	val, found := f[key]
  	if !found {
  		return time.Time{}
  	}
  	v, ok := val.(time.Time)
  	if !ok {
  		s := f.GetString(key)
  		v, _ = time.Parse(time.RFC3339, s)
  	}
  	return v
  }
docs: // GetString returns an int representation of a logged field