ple we will use the COM object used for win32com testing,
<code>PyCOMTest.PyCOMTest</code>.  This object defines a method which is
defined in IDL as:
<pre>
HRESULT DoubleInOutString([in,out] BSTR *str);
</pre>

As you can see, it takes a single string parameter which is also used as
an "out" parameter - the single parameter will be updated after the call.
The implementation of the method simply "doubles" the string.

<p>If the object has a type-library, this method works fine with makepy
generated support. 