@@ -0,0 +1,158 @@
+package water;%0A%0Apublic class KeyUtils %7B%0A  public static %3CX extends Keyed%3E Key%3CX%3E make(String s) %7B%0A    Key k = water.Key.make(s);%0A    return (Key%3CX%3E) k;%0A  %7D%0A%7D%0A

Add Key make helper that is typed.