class ActiveFedora::Base

def update
  result = Fedora::Repository.instance.save(@inner_object)
  datastreams_in_memory.each do |k,ds|
    if ds.dirty? || ds.new_object? 
      if ds.kind_of?(ActiveFedora::MetadataDatastream) || ds.instance_of?(ActiveFedora::RelsExtDatastream)
        @metadata_is_dirty = true
      end
      result = ds.save
    end 
  end
  refresh
  return result
end