This stage was renamed to Solr Query in Fusion 3.1. It was called the Query Solr stage in prior Fusion versions.
The Solr Query query pipeline stage transforms the Fusion query pipeline
object into a Solr query and sends it to Solr.
When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.