Where to place function attributes?

[Jeremy DeHaan]

This probably isn't specifically a D only question as I've seen 
this in C++ too, but does it make any kind of difference where an 
attribute is placed when writing a function?

example
class C
{
    immutable void foo()
    {
        //code
    }
}

vs
class D
{
    void foo() immutable
    {
        //code
    }
}