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: evss.rb
    path of file: ./repos/vets-api/modules/claims_api/lib/claims_api/special_issue_mappers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'claims_api/field_mapper_base'

module ClaimsApi
  module SpecialIssueMappers
    class Evss < ClaimsApi::FieldMapperBase
      protected

      def items
        [
          { name: 'ALS', code: 'ALS' },
          { name: 'HEPC', code: 'HEPC' },
          { name: 'POW', code: 'POW' },
          { name: 'PTSD/1', code: 'PTSD_1' },
          { name: 'PTSD/2', code: 'PTSD_2' },
          { name: 'PTSD/3', code: 'PTSD_3' },
          { name: 'PTSD/4', code: 'PTSD_4' },
          { name: 'MST', code: 'MST' },
          { name: 'Amyotrophic Lateral Sclerosis (ALS
    
      def items
        [
          { name: 'ALS', code: 'ALS' },
          { name: 'HEPC', code: 'HEPC' },
          { name: 'POW', code: 'POW' },
          { name: 'PTSD/1', code: 'PTSD_1' },
          { name: 'PTSD/2', code: 'PTSD_2' },
          { name: 'PTSD/3', code: 'PTSD_3' },
          { name: 'PTSD/4', code: 'PTSD_4' },
          { name: 'MST', code: 'MST' },
          { name: 'Amyotrophic Lateral Sclerosis (ALS)', code: 'ALS' },
          { name: 'Hepatitis C', code: 'HEPC' },
          { name: 'PTSD - Combat', code: 'PTSD_1' },
          { name: 'PTSD - Non-Combat', code: 'PTSD_2' },
          { name: 'PTSD - Personal Trauma', code: 'PTSD_3' },
          { name: 'Non-PTSD Personal Trauma', code: 'PTSD_4' },
          { name: 'Military Sexual Trauma (MST)', code: 'MST' }
        ].freeze
      end