Stack level too deep?

LocationCalendarDayHours.rb

# Why I get stack level too deep in IRB,  when calling:
#   location = VendorLocation.find 53575
#   LocationCalendarDayHours.from_java_json(location.calendarHours).first.weekday_type_code
#
# Note: I created weekday_type.rb as a WwConstant


class LocationCalendarDayHours
  include ActiveModel::Model
  include WWLegacyJavaJsonSupport

  attr_accessor :weekday_type_code, :enabled_flag, :start_time, :end_time

  def self.java_enums
    %w( weekdayType )
  end

  def weekday_type_code
    WwConstants::WeekDayType.find_by_code( weekday_type_code.to_s )
  end
end

Ok My problem was that weekday_type_code it's calling itself, so what I needed to do is rename the weekday_type_code method to weekday_type and then I can call something like: LocationCalendarDayHours.from_java_json(location.calendarHours).first.weekday_type