AEM and SOLR integration: solr node type not found

Hi! As the titlte says, I'm following this tutorial 

https://docs.adobe.com/docs/en/aem/6-1/deploy/platform/queries-and-indexing.html#par_title_7

to integrate solr with aem. But when I get to step 14 

Create a new node called solrIndex under oak:index, and set the following properties:

• type:solr (of type String)
• async:async (of type String)
• reindex:true (of type Boolean

No solr type is available for the node type. Am I missing something?

Thanks.

PS: The guide is outdated or the solr examples are.