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: mapped_builder.rb
    path of file: ./repos/rails_stuff/lib/rails_stuff/statusable
    
    the code of the file until where you have to start completion: module RailsStuff
  module Statusable
    # Generates methods and scopes when status names are mapped to internal values.
    class MappedBuilder < Statusable::Builder
      delegate :mapping, :inverse_mapping, to: :helper

      # Field reader retur
    
      def field_reader
        field = self.field
        helper = self.helper

        # Returns status name.
        define_method field do |original = false|
          val = super()
          original || !val ? val : helper.unmap(val)
        end

        # Status as symbol.
        define_method "#{field}_sym" do
          val = public_send(field)
          val && val.to_sym
        end
      end