one feature about omxh265enc

Now we use gstreamer plugins to encode. I see omxh265enc has a feature of "SliceIntraRefreshEnable",   I set it as true but it dones't take effect.  I want to know whether TX1 support this feature. 
Thanks!

Please refer to
https://devtalk.nvidia.com/default/topic/1020558/jetson-tx1/h265-decode-failed/post/5196041/#5196041