def to_contributor
      contributor = Contributor.new
      contributor.name = self.name
      contributor.email = self.email unless self.email.nil?
      contributor.uri = self.uri unless self.uri.nil?
      contributor
    end
def to_contributor
      contributor = Contributor.new
      contributor.name = self.name
      contributor.email = self.email unless self.email.nil?
      contributor.uri = self.uri unless self.uri.nil?
      contributor
    end
Convert to an Atom::Contributor object