class ActiveFedora::Associations::Builder::Filter

def self.define_readers(mixin, name)
  super
  mixin.redefine_method("#{name.to_s.singularize}_ids") do
    association(name).ids_reader
  end
end

def self.macro
  :filter
end

def self.valid_options(options)
  super + [:extending_from, :condition]
end