LabView gRPC Header

[Thili_kiri_kaju]

Does anyone have ever used Metadata (Header - equivalent to HTTP header)  while requesting service from a server using gRPC? 
I would expect the Client create VI to have somewhere to enter the header as an input but it doesn't. These Three VIs were created through the gRPC toolkit from LabView. 

You can easily enter headers into HTTP VI that is available in LabView, I wanted to do the same for these VIs in gRPC toolkit but couldn't fine anything ? Any leads on these please ? 
 These VIs were generated through the Proto file

[Thili_kiri_kaju · Accepted solution]

Update on this !!!! .
LabVIEW Has confirmed that they don't support gRPC toolkit but found out that custom headers can not be entered with these libraries as well. Working with a workaround now by changing the protofile to take credentials in.

Questions regarding gRPC can be asked in the GitHub forum  ( Quite Inactive though )