I changed the microsdk example to implement the function.
Below the Execute() part of the command plugin.

However, it does not show any lines in the console.

Also, when I change DiagnosticOutput("Line: @", line._str); to ApplicationOutput("Line: @", line._str); cinema 'hangs' on the line above userLoggerType.Iterate([](maxon::LoggerLine& line) -> maxon::Result<void>

Could it be that I did not activate the diagnostic output?

Manual: "The output is visible in debug builds or in a release build when the debug console with diagnostic output is activated"

	virtual Bool Execute(BaseDocument* doc)
	{
		iferr_scope_handler
		{
			// if an error occurred, show a pop-up message
			const maxon::String errString = err.ToString(nullptr);
			::MessageDialog(errString);
			return false;
		};

		//###########################################
		// This example accesses the default logger and gets all displayed lines.
		// get default logger

		ApplicationOutput("This example accesses the default logger and gets all displayed lines.");
		
		const maxon::LoggerRef defaultLogger = maxon::Loggers::Default();
		for (const auto& logger : defaultLogger.GetLoggerTypes())
		{
			const maxon::LoggerTypeRef loggerType = logger.GetFirst();  // get first element of the pair
			if (loggerType.IsInstanceOf<maxon::UserLoggerTypeRef>())
			{
				const maxon::UserLoggerTypeRef userLoggerType = maxon::Cast<maxon::UserLoggerTypeRef>(loggerType);
				// iterate over all lines sent to the logger
				userLoggerType.Iterate([](maxon::LoggerLine& line) -> maxon::Result<void>
				{
					DiagnosticOutput("Line: @", line._str);
					//ApplicationOutput("Line: @", line._str);
					return maxon::OK;
				}) iferr_return;
			}
		}
		

		return true;
	}