code: def extract_soap_operations(full_soap_xml)
        doc = Nokogiri::XML(full_soap_xml)
        operations = doc.css('wsdl|operations')
        operations.attr('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance')
        operations.each do |element|
          check_xsi_type(element)
        end
        return operations.to_s
      end
docs: Given a full SOAP xml string, extract just the operations element
   from the SOAP body as a string.