Use of the returnDiagnostics parameter for additional information|OPC UA Standard|Forum|OPC Foundation

Hi Team,

I am using `opc-ua-stack-1.4.1.1` java based sdk for writing the OPC UA client. I need some help with code snippet for implementing returnDiagnostics  parameter in the request header. I want to validate my understanding and be sure about the implementation and response for return diagnostics parameter.

Would it be possible to get some sample code snippet and clarification on this?

Thanks in advance!