def get_filename(self):
file_name = self._get_rehydrated_headers().get_filename()<EOL>if isinstance(file_name, six.string_types):<EOL><INDENT>result = utils.convert_header_to_unicode(file_name)<EOL>if result is None:<EOL><INDENT>return file_name<EOL><DEDENT>return result<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>
Returns the original filename of this attachment.