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: message_signature_serializer.rb
    path of file: ./repos/vets-api/modules/mobile/app/serializers/mobile/v0
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Mobile
  module V0
    class MessageSignatureSerializer
      include JSONAPI::Serializer

      set_type :messageSignature
      attributes :sign
    
      def initialize(id, signature_info, options = {})
        resource = MessageSignatureStruct.new(id,
                                              signature_info[:signature_name],
                                              signature_info[:include_signature],
                                              signature_info[:signature_title])
        super(resource, options)
      end