[Res] Iterating over nodes in groovy script

How do you iterate over multiple nodes in an xml response and then pull out data? I have the following xml and I need to check depending on the name tag and then I set a property with the id tag value.

<Response xmlns="https://testsite.com">
   <error null="true"/>
   <method>http://testsite.com/testmethod/method>
   <result>
      <e>
         <id>123</id>
         <name>Main</name>
         <type>normal</type>
         <unreadPostCount>7</unreadPostCount>
      </e>
      <e>
         <id>3214</id>
         <name>Individual</name>
         <type>student</type>
         <unreadPostCount>3</unreadPostCount>
      </e>
   </result>
   <transactionId>123</transactionId>
</Response>