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: dsl.rb
    path of file: ./repos/SimpleAMS/lib/simple_ams
    
    the code of the file until where you have to start completion: require 'simple_ams'

module SimpleAMS::DSL
  def self.included(host
    
    def _default_type_name
      if to_s.end_with?('::Collection_')
        _name = to_s.gsub(
          'Serializer', ''
        ).gsub(
          '::Collection_', ''
        ).downcase.split('::')[-1]

        "#{_name}_collection".to_sym
      else
        to_s.gsub('Serializer', '').downcase.split('::')[-1].to_sym
      end