pragma msg field name?

[Chris Katko]

inside a static foreach I can do

```
enum rep;

class myObject{
int field1, field2, field3;

static foreach(field; getSymbolsByUDA!(typeof(this), rep))
{
	pragma(msg, field);  // fails
	pragma(msg, fullyQualifiedName!field); // works
}
}
```

error for pragma(msg, field)
```
source/app.d(33,16): Error: value of `this` is not known at 
compile time
source/app.d(33,4):        while evaluating `pragma(msg, field)`

[repeating for every variable in the class]
```

How do I get just the field name? And why does it think this is a 
run-time value? I need to wrap it in some sort of template?

All I see in std.traits docs are: fullyQualifiedName mangledName 
moduleName packageName