How to to add a "non-block" code using mod_tool

Hi Everyone,

From the tutorial on out of tree module I followed how to install a
and access it in GRC.

Now I have a block, “” but the actual encoding operation
in another class in file “” . Inside the work function I just
that operation.
Using modtool how do I get this helper file “” installed along
with the encoder. Is it required to move the class definitions inside
helper file into the “” file?