class MyModel
  def save(_ = true)
    # your saving logic goes here!
    puts "saved"
  end
  
  alias :save! :save
  
  # dummy method definitions (required)
  def update_attribute(*args) end
  def new_record?() true; end
  
  attr_accessor :name
  
  include ActiveRecord::Validations
  validates_presence_of :name
end