Call System::AutoCmd::GetNamedArgCount to determine the number of named parameter values that have been assigned using the << operator. The values themselves can be retrieved using the GetNamedParm method, and the corresponding names using the GetNamedParmName method. 

System::AutoCmd::operator_streaming 

System::AutoCmd::GetArgCount 

System::AutoCmd::GetNamedParm 

System::AutoCmd::GetNamedParmName 

System::AutoCmd::GetNamedArgType