Exemple #1
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		/**
     * Adds the element contained in the PacketExtension to the child element of the IQ
     * packet. IQ packets, unlike the other packet types, have a unique child element that
     * holds the packet extensions. If an extension is added to an IQ packet that does
     * not have a child element then an IllegalStateException will be thrown.<p>
     *
     * It is important that this is the first and last time the element contained in
     * PacketExtension is added to another Packet. Otherwise, a runtime error will be
     * thrown when trying to add the PacketExtension's element to the Packet's element.
     * Future modifications to the PacketExtension will be reflected in this Packet.<p>
     *
     * Note: packet extensions on IQ packets are only for use in specialized situations.
     * In most cases, you should only need to set the child element of the IQ.
     *
     * @param extension the PacketExtension whose element will be added to this Packet's element.
     */
		public void addExtension(PacketExtension extension) {
			XElement childElement = getChildElement();
			if (childElement == null) {
				throw new IllegalStateException("Cannot add packet extension when child element is null");
			}
			// Add the extension to the child element
			childElement.Add(extension.getElement());
		}
Exemple #2
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		/**
     * Adds the element contained in the PacketExtension to the element of this packet.
     * It is important that this is the first and last time the element contained in
     * PacketExtension is added to another Packet. Otherwise, a runtime error will be
     * thrown when trying to add the PacketExtension's element to the Packet's element.
     * Future modifications to the PacketExtension will be reflected in this Packet.
     *
     * @param extension the PacketExtension whose element will be added to this Packet's element.
     */
		public void addExtension(PacketExtension extension) {
			element.Add(extension.getElement());
		}