Reverted removal of "unused" method

jOOQ/src/main/java/org/jooq/impl/Utils.java

@@ -329,6 +329,17 @@ final class Utils {
         }
     }
 
+    /**
+     * Extract the configuration from an attachable.
+     */
+    static final Configuration getConfiguration(Attachable attachable) {
+        if (attachable instanceof AttachableInternal) {
+            return ((AttachableInternal) attachable).configuration();
+        }
+
+        return null;
+    }
+
     /**
      * Get an attachable's configuration or a new {@link DefaultConfiguration}
      * if <code>null</code>.
@@ -2593,4 +2604,4 @@ final class Utils {
             }
         }
     }
-}
+}