(self)
This function clean all the old data to make a new calculation
This function clean all the old data to make a new calculation
This function clean all the old data to make a new calculation
def _clear_old_data(self):
        """
        This function clean all the old data to make a new calculation
        """
        self.line_ids.unlink()
        self.summary_ids.unlink()
        self.tax_summary_ids.unlink()
def _clear_old_data ( self ) : self . line_ids . unlink ( ) self . summary_ids . unlink ( ) self . tax_summary_ids . unlink ( )