static WebSocketFrame ofContinuation(String text, boolean finalFragment) {
        requireNonNull(text, "text");
        return new ByteArrayWebSocketFrame(text.getBytes(StandardCharsets.UTF_8),
                                           WebSocketFrameType.CONTINUATION, finalFragment, text);
    }
Returns a new text continuation {@link WebSocketFrame} with the text and {@code finalFragment}.

@see <a href="https://datatracker.ietf.org/doc/html/rfc6455#section-5.4">Fragmentation</a>
core/src/main/java/com/linecorp/armeria/common/websocket/WebSocketFrame.java