missing HexString documentation

[Walter Bright]

On 2/7/2018 8:03 AM, Ralph Doncaster wrote:
> As expected,
> auto data = cast(ubyte[]) x"deadbeef";
> works with -betterC, but
> auto data = cast(ubyte[]) hexString!"deadbeef";
> does not.
> 

When I tried it:

   import std.conv;
   void test() {
     auto data = cast(ubyte[]) hexString!"deadbeef";
   }

with:

   dmd -c -betterC test2.d

it compiled without complaint. Are you doing something different? (This is why 
posting complete examples, not snippets, is better. That way I don't have to 
fill in the blanks with guesswork.)