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: xml_dom.rb
    path of file: ./repos/archivesspace/backend/app/converters/lib
    
    the code of the file until where you have to start completion: require 'nokogiri'
require_relative 'parse_queue'
require_relative 'utils'
require_relative 'jsonmodel_wrap'
require 'saxerator'

module ASpaceImport
  module XML
    module DOM

      module ClassMethods
        def configure
          @config ||= Config.new
          yield @config
        end


        def config
          @config
        end


        def make(type)

    
      def process_field(obj, key, value)
        raise "Received a non-string mapping: #{key}" unless key.is_a?(String)

        # xpath => Array
        if value.is_a?(Array)
          value.each do |i|
            process_field(obj, key, i)
          end
        # xpath => :field_name
        elsif value.is_a?(Symbol)
          @context.last.xpath(key).each do |node|
            if obj[value].is_a?(Array)
              obj[value] << node.inner_text
            else
              obj[value] = node.inner_text
            end
          end