module Hashie::Extensions::IgnoreUndeclared

def initialize_attributes(attributes)
  return unless attributes
  klass = self.class
  translations = klass.respond_to?(:translations) && klass.translations
  attributes.each_pair do |att, value|
    next unless klass.property?(att) || (translations && translations.include?(att))
    self[att] = value
  end
end

def property_exists?(property)
  self.class.property?(property)
end