[Vala] multiple fields in a single declaration

[Adam Dingle <adam yorba org>]

Vala lets me declare multiple local variables in a single declaration:

void foo() {
   int a, b;    // OK
}

But if I attempt to declare multiple fields in a single declaration I 
get a syntax error:

class Foo {
   int a, b;   // syntax error
}

Is this by design?  Or are multiple fields per declaration simply not 
yet implemented?

adam