Allow another message bus connection to claim the name.
If another message bus connection owns the name, immediately return an error from g_bus_own_name() rather than entering the waiting queue for that name. (Since 2.54)
No flags set.
If another message bus connection owns the name and have specified %G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT, then take the name from the other connection.
Flags used in g_bus_own_name().