| find_package(Qt6 COMPONENTS Mqtt REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::Mqtt)
|QT += mqtt
User properties allow a client to pass additional data to the server or other subscribers, which do not belong to the message payload.
On the other hand it also provides a server the flexibility to provide further information to connected clients.
The server might add additional user properties to the ones provided. However, the order of the provided properties is not changed during transfer.
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