class ActiveFedora::QualifiedDublinCoreDatastream

when this method returns. Each term is marked as a multivalue string.
Constructor. this class will call self.field for each DCTERM. In short, all DCTERMS fields will already exist

def initialize(attrs=nil)
  super
  DCTERMS.each do |el|
    field el, :string, :multiple=>true
  end
  self
end