What is the XML rule for Match based on Internet Email Address?

<rule>    <description>Match based on Internet Email Address</description>    <conditions>        <or>            <if-class-name op="equal">User</if-class-name>          </or>      </conditions>    <actions>        <do-find-matching-object scope="subtree">            <arg-match-attr name="urn:ietf:params:scim:schemas:core:2.0:User:emails.value"/>          </do-find-matching-object>      </actions>  </rule>