when computing sub-bindings we should assume that annotation queries …

…are leaf nodes; they contain a term query but this is an internal implementation detail which shouln't be exposed. See ##5 for more context

mimir-core/src/main/java/gate/mimir/search/query/AnnotationQuery.java

@@ -134,12 +134,12 @@ public Binding nextHit() throws IOException {
       long doc = underlyingHit.getDocumentId();
       if(isInDocumentMode) {
         return new Binding(query, doc, 0, engine.getIndex().getDocumentSize(doc),
-          underlyingHit.getContainedBindings());        
+          null);
       } else {
         return new Binding(query, doc,
           underlyingHit.getTermPosition(),
           underlyingHit.getLength(),
-          underlyingHit.getContainedBindings());        
+          null);
       }
     }