qt - org.freedesktop.DBus.NameLost 是什么意思？

Question

当我的应用程序尝试调用 DBus 可激活会话总线服务时，我收到org.freedesktop.DBus.NameLost信号。

这个信号的真正含义是什么？这是否意味着应用程序不能再向 DBus 服务发送信号？

要求

method call time=1499719567.788200 sender=:1.439 -> destination=com.test.mytest serial=7 path=/com/test/mytest; interface=org.freedesktop.Application; member=Open
   array [
      string "mytest://192.168.121.12?message=welcome"
   ]
   array [
   ]

发出的信号

signal time=1499719567.789882 sender=org.freedesktop.DBus -> destination=:1.439 serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameLost
   string ":1.439"
signal time=1499719567.789938 sender=org.freedesktop.DBus -> destination=(null destination) serial=1045 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
   string ":1.439"
   string ":1.439"
   string ""