Determine type of property

[Steven Schveighoffer via Digitalmars-d-learn]

On 2/2/16 2:04 PM, NX wrote:
> On Tuesday, 2 February 2016 at 03:36:25 UTC, Steven Schveighoffer wrote:
>> int y() { return 1;}
>
> No need for meta-programming hackery, mark it as @property:
>
> int y() @property { return 1;}
>

I don't have control over S. I am passed S and need to figure out that 
it qualifies as a type I can use.

I also figured this out on my own, but for some reason my reply didn't 
go through. This is what I came up with:

template propertyType(alias x)
{
     static if(is(typeof(x) == function))
         alias propertyType = typeof(x());
     else
         alias propertyType = typeof(x);
}

-Steve