I've added it to the .h file with:
//Scans for wireless networks. Returns the number of networks found.
//< test
Byte Scan();
It looks like this in the XML file (which you normally shouldn't update yourself):
<method>
<name DesignerName="Scan">Scan</name>
<comment>Scans for wireless networks. Returns the number of networks found.
&lt; test</comment>
<returntype>Byte</returntype>
</method>