Called when the coroutine is co_await'ed. Returns true if the coroutine should be suspended.

Called when the coroutine is resumed. Returns the result or throws the exception.

Called when the coroutine is suspended, returning false here will immediately resume the coroutine.

! * @brief Emits InterfacesAdded signal for this object path * * See IObject::emitInterfacesAddedSignal(). */

! * @brief Emits InterfacesRemoved signal for this object path * * See IObject::emitInterfacesRemovedSignal(). */

final_suspend suspends so that the test code can retrieve the result or exception from the promise before the coroutine is destroyed

NOLINT(readability-make-member-function-const)

TODO: Create a RAII ownership class for creds with copy&move semantics, doing ref()/unref() under the hood. Create a method Message::querySenderCreds(