'Add file content from aff4_object to result.'

def _ExportFileContent(self, aff4_object, result):

    if self.options.export_files_contents:
        try:
            result.content = aff4_object.Read(self.MAX_CONTENT_SIZE)
            result.content_sha256 = hashlib.sha256(result.content).hexdigest()
        except (IOError, AttributeError) as e:
            logging.warning("Can't    read    content    of    %s:    %s", aff4_object.urn, e)
