[Seaside] Rendering on an external stream

[Marco D'Ambros]

Hi,

I need to write a seaside component which understands  
#renderContentOn: on an external file.
Let's say that the component is called componentToPrint, what I want  
to do is to redirect the output (what gets written on the html  
document) of

html render: componentToPrint

on an external stream.

How can I do it?

cheers
Marco