in amazon_transcribe/eventstream.py [0:0]
    def _validate_prelude(self, prelude: MessagePrelude):
        if prelude.headers_length > _MAX_HEADERS_LENGTH:
            raise InvalidHeadersLength(prelude.headers_length)
        if prelude.payload_length > _MAX_PAYLOAD_LENGTH:
            raise InvalidPayloadLength(prelude.payload_length)