     }
 
     protected function getTileImageHelper1 (img :Bitmap, hashValue :int, masks :Map,
-        fringers :Array, fringerIdx :int, callback :Function)
+        fringers :Array, fringerIdx :int, callback :Function) :void
     {
         var fringer :FringerRec = fringers[fringerIdx];
         var indexes :Array = getFringeIndexes(fringer.bits);

        NORTHWEST | WEST | SOUTHWEST | SOUTH | SOUTHEAST | EAST | NORTHEAST,

        // all the directions!
        NORTH | NORTHEAST | EAST | SOUTHEAST |
                SOUTH | SOUTHWEST | WEST | NORTHWEST
    ];

    // A reverse map of the above array, for quickly looking up which tile

        return "[base=" + baseset + ", pri=" + priority + ", bits="
            + bits.toString(16) + "]";
    }
}
