<?xml version="1.0"?>
<openerp>
<data noupdate="1">
<function model="*model_name*" name="_configure_sales"/>
</data>
</openerp>
This simple xml file is calls _configure_sales
function from model_name model.
NOTE: this xml file should be on the top of data
array, because Odoo is processiong xml files from top to bottom.