I was trying to find where to put configurations for the DefaultWrapperModel, and I ended up finding a bug in the code that loads models and stores from disk. The block of code protected by the if statement from this line: https://github.com/apache/solr/blob/main/solr/modules/ltr/src/java/org/apache/solr/ltr/search/LTRQParserPlugin.java#L132 will never be executed.
It is impossible that the mr and fr variables are both not null, because object res is either an instance of ManagedFeatureStore or an instance of ManagedModelStore. This avoids the call to load stored models. Any thoughts?
