anchor.diff:                                  </metadata>
                               </contextAttribute>
                           </contextAttributeList>
  -                        <domainMetadata>
  -                            <contextMetadata>
  -                                <name>test</name>
  -                                <type>test</type>
  -                                <value>test</value>
  -                            </contextMetadata>
  -                        </domainMetadata>
                       </contextElement>
                       <statusCode>
                           <code>200</code>
                           <reasonPhrase>Ok</reasonPhrase>
  -                        <details>a</details>
                       </statusCode>
                   </contextElementResponse>
               </contextResponseList>
  
positive.code:                     <attribute>temperature</attribute>
                  </attributeList>
              <reference>127.0.0.1</reference>
              <duration>P5Y</duration>
              <restriction>
                  <attributeExpression>testRestriction</attributeExpression>
                  <scope>
                      <operationScope>
                          <scopeType></scopeType>
                          <scopeValue></scopeValue>
                      </operationScope>
                  </scope>
              </restriction>
  
negative.code:         <?xml version="1.0" encoding="UTF-8"?>
          <updateContextSubscriptionResponse>
              <subscribeResponse>
                  <subscriptionId>12345</subscriptionId>
                  <duration>P5Y</duration>
                  <throttling>P1D</throttling>
              </subscribeResponse>
  