You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: subjob.rb
    path of file: ./repos/sidekiq-superworker/lib/sidekiq/superworker
    
    the code of the file until where you have to start completion: module Sidekiq
  module Superworker
    class Subjob
      include ActiveModel::Validations
      include ActiveModel::Naming

      ATT
    
        def create(attributes={})
          if attributes.is_a?(Array)
            attributes.collect { |attribute| create(attribute) }
          else
            object = new(attributes)
            object.save
            object
          end