module ActiveLdap::Associations

def self.append_features(base)
  super
  base.extend(ClassMethods)
  base.class_attribute(:associations)
  base.associations ||= []
end

def clear_association_cache
  return if new_record?
  (self.class.associations || []).each do |association|
    instance_variable_set("@#{association}", nil)
  end
end