code: func (self *Connection) Model(typeName string) *Model {
  
  	typeNameLC := strings.ToLower(typeName)
  
  	if _, ok := self.modelRegistry[typeNameLC]; ok {
  
  		return self.modelRegistry[typeNameLC]
  	}
  
  	panic(fmt.Sprintf("DB: Type '%v' is not registered", typeName))
  }
docs: /*
  To create actions on each collection you have to request a model instance with this method.
  Make sure that you registered your collections and schemes first, otherwise it will panic.
  
  For example:
  	User := connection.Model("User")
  
  	User.Find() ...
  */