text: <list xmlns="http://schemas.sulu.io/list-builder/list">
      <key>group-concat</key>
  
      <properties>
          <group-concat-property name="tags" glue=",">
              <field-name>name</field-name>
              <entity-name>SuluTagBundle:Tag</entity-name>
  
              <joins>
                  <join>
                      <entity-name>SuluTagBundle:Tag</entity-name>
                      <field-name>%sulu.model.contact.class%.tags</field-name>
                  </join>
              </joins>
              <filter type="test">
                  <params>
                      <param name="testCollection" type="collection">
                          <param name="test1" value="%test-parameter%" />
                          <param name="test2" value="test" />
                      </param>
                  </params>
              </filter>
          </group-concat-property>
      </properties>
  </list>
  
  