code: func (m *Model) ID() interface{} {
  	fbn, err := m.fieldByName("ID")
  	if err != nil {
  		return 0
  	}
  	if m.PrimaryKeyType() == "UUID" {
  		return fbn.Interface().(uuid.UUID).String()
  	}
  	return fbn.Interface()
  }
docs: // ID returns the ID of the Model. All models must have an `ID` field this is
  // of type `int`,`int64` or of type `uuid.UUID`.