### Question:
CoAPMessage { public boolean messageCanceled() { return this.canceled; } CoAPMessage(int version, CoAPMessageType messageType,
            CoAPCode methodCode, int messageId, byte[] token);  CoAPMessage(CoAPMessageType messageType, CoAPCode methodCode,
            int messageId, byte[] token); void setVersion(short version); int getVersion(); void setMessageType(CoAPMessageType messageType); CoAPMessageType getMessageType(); int getOptionCount(); void setCode(CoAPCode code); CoAPCode getCode(); void setToken(byte[] token); byte[] getToken(); void setMessageId(int messageId); int getMessageId(); synchronized boolean addOptionHeader(CoAPOptionHeader option); boolean removeOptionHeader(CoAPOptionHeader option); void setPayload(byte[] payload); byte[] getPayload(); List<CoAPOptionHeader> getOptionHeaders(); List<CoAPOptionHeader> getOptionHeaders(CoAPOptionName optionName); void setOptionHeaders(List<CoAPOptionHeader> headers); int getRetransmissions(); int getTimeout(); void messageRetransmitted(); boolean messageCanceled(); void setMessageCanceled(boolean canceled); void setSocketAddress(InetSocketAddress remoteSocketAddress); InetSocketAddress getSocketAddress(); String getIdentifier(); CoAPOptionHeader getUriHostOptionHeader(); byte[] encoded(); boolean isObserveMessage(); long getMaxAge(); String logMessage(); static final String MESSAGE_ID; static final String TOKEN; static final String URI; }### Answer:
@Test public void testMessageCanceled() { assertFalse(resp.messageCanceled()); }