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: many.rb
    path of file: ./repos/mongoid/lib/mongoid/association
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
# rubocop:todo all

module Mongoid
  module Association

    # This is the superclass for all many to one and many to many association
    #
    
      def create(attributes = nil, type = nil, &block)
        if attributes.is_a?(::Array)
          attributes.map { |attrs| create(attrs, type, &block) }
        else
          doc = build(attributes, type, &block)
          _base.persisted? ? doc.save : raise_unsaved(doc)
          doc
        end
      end