service_patterns.rb

class ServiceObject
  def initialize(arg1, arg2)
    @arg1 = arg1
    @arg2 = arg2
  end
  
  def perform
    # some logic
    # ...
    private_method_with_logic
  end

  private
  
  def private_method_with_logic
    # some logic
  end
end

ServiceObject.new(arg1, arg2).perform