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: learning_hour_policy.rb
    path of file: ./repos/casa/app/policies
    
    the code of the file until where you have to start completion: class LearningHourPolicy < ApplicationPolicy
  def index?
    admin_or_supervisor_or_volunteer?
  end

  def show?
 
    
    def resolve
      case user
      when CasaAdmin
        scope.all_volunteers_learning_hours(@user.casa_org_id)
      when Supervisor
        scope.supervisor_volunteers_learning_hours(@user.id)
      when Volunteer
        scope.where(user_id: @user.id)
      else
        raise "unrecognized role #{@user.type}"
      end