expects FileInfo

def process_data(self, file_info):
        """expects FileInfo"""
        if self._exceeds_max_file_size(file_info):
            self.log.info("File '%s' has a size in bytes (%d) greater than the configured limit. Will be ignored.",
                          file_info.path, file_info.size)
            self.fire(events.FilteredFile(file_info))
            return None
        else:
            return file_info