    # File lib/fog/vcloud/compute.rb, line 214
            def default_vdc_href
              if @vdc_href.nil?
                unless @login_results
                  do_login
                end
                org = organizations.first
                vdc = get_organization(org.href).links.find { |item| item[:type] == 'application/vnd.vmware.vcloud.vdc+xml'}
                @vdc_href = vdc[:href]
              end
              @vdc_href
            end