class ActiveFedora::DelegatedAttribute

def write_rdf(node, v)
  term = if at
    vals = at.dup
    while vals.length > 1
      node = node.send(vals.shift)
      node = node.build if node.empty?
      node = node.first
    end
    vals.first
  else
    field
  end
  node.send("#{term}=", v)
end