Why can't I pass a null to my functions?

[Paulo Gaspar]

It looks like the new Velocity replaces a null reference
with "something" before passing it as a parameter to a 
method reference.

So, if I have:

  #if($tool.hasSomething($data.field))

and $data.field resolves to null, the hasSomething() method
gets something else (not the null).

WHY?


Thanks,
Paulo Gaspar