restore 'unused methods' since they are used in tests

lib/dialects/abstract/query-generator.js

@@ -1090,7 +1090,11 @@ module.exports = (function() {
         if (options.keysEscaped) {
         if (options.keysEscaped) {
           _key = key
           _key = key
         } else {
         } else {
-          _key = this.quoteIdentifiers(key)
+          if(this.isAssociationFilter(key, dao, options)){
+            _key = key = this.getAssociationFilterColumn(key, dao, options);
+          } else {
+            _key = this.quoteIdentifiers(key)
+          }
         }
         }
 
 
         if (Array.isArray(value)) {
         if (Array.isArray(value)) {