Rewording.

Author: afoucret

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/plan/logical/inference/Rerank.java

@@ -137,8 +137,8 @@ protected AttributeSet computeReferences() {
     }
 
     public static AttributeSet computeReferences(List<Alias> fields) {
-        AttributeSet generated = new AttributeSet(asAttributes(fields));
-        return Expressions.references(fields).subtract(generated);
+        AttributeSet rerankFields = new AttributeSet(asAttributes(fields));
+        return Expressions.references(fields).subtract(rerankFields);
     }
 
     @Override
@@ -185,6 +185,6 @@ public List<Attribute> output() {
     }
 
     public static boolean planHasAttribute(QueryPlan<?> plan, Attribute attribute) {
-        return plan.output().stream().anyMatch(attr -> attr.equals(attribute));
+        return plan.outputSet().stream().anyMatch(attr -> attr.equals(attribute));
     }
 }