static WebSocketFrame ofPooledContinuation(ByteBuf data, boolean finalFragment) {
        requireNonNull(data, "data");
        return new ByteBufWebSocketFrame(data, WebSocketFrameType.CONTINUATION,
                                         finalFragment);
    }
(Advanced users only) Returns a new binary {@link WebSocketFrame} with the {@link ByteBuf}
and {@code finalFragment}.
{@code isText} must be {@code true} if this continuation frame follows a text frame.
{@code false} if this follows a binary frame.

@see #ofContinuation(byte[])
@see PooledObjects
core/src/main/java/com/linecorp/armeria/common/websocket/WebSocketFrame.java