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: appeals_base_controller_v1.rb
    path of file: ./repos/vets-api/app/controllers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'caseflow/service'
require 'decision_review_v1/service'

class AppealsBaseControllerV1 < ApplicationController
  include ActionController::Serialization
  include FailedRequestLoggable
  before_action { authorize :appeals, :access? }

  private

  def decision_review_service
    DecisionReviewV1::Service.new
  end

  def request_body_hash
    @request_body_hash ||= get_hash_from_request_body
  end

  def get_hash_from_request_body
    # rubocop:disable Style/ClassEqualityComp
    
  def get_hash_from_request_body
    # rubocop:disable Style/ClassEqualityComparison
    # testing string b/c NullIO class doesn't always exist
    raise request_body_is_not_a_hash_error if request.body.class.name == 'Puma::NullIO'
    # rubocop:enable Style/ClassEqualityComparison

    body = JSON.parse request.body.string
    raise request_body_is_not_a_hash_error unless body.is_a?(Hash)

    body
  rescue JSON::ParserError
    raise request_body_is_not_a_hash_error
  end

  def request_body_is_not_a_hash_error
    DecisionReviewV1::ServiceException.new key: 'DR_REQUEST_BODY_IS_NOT_A_HASH'
  end

  def request_body_debug_data
    {
      request_body_class_name: request.try(:body).class.name,
      request_body_string: request.try(:body).try(:string)
    }
  end
end