class ActiveFedora::RDFDatastream

def deserialize(data=nil)
  return ::RDF::Graph.new if new_record? && data.nil?
  data ||= remote_content
  # Because datastream_content can return nil, we should check that here.
  return ::RDF::Graph.new if data.nil?
  data.force_encoding('utf-8')
  ::RDF::Graph.new << ::RDF::Reader.for(serialization_format).new(data)
end