[news.eclipse.platform.rcp] Using object as Command's Parameter

[Jiyul <softwitch@xxxxxxxxx>]

I realized the way to use java object as Command's parameter by Paul 
Webster's help. (thanks!)

But it needs a lot of work and I hate that.
is this right way?

ICommandService cService = ... getting command service ...

Command openCommand = cService.getCommand("commandID");
IParameter param = openCommand.getParameter("paramID");

ITypedParameter tParam = (ITypedParameter) param;

Parameterization parameterization =
  new Parameterization(
      param,
      tParam.getParameterType()
	.getValueConverter()
        .convertToString(parameterValueObject)
  );

ParameterizedCommand pCommand = new ParameterizedCommand(openCommand,
		new Parameterization[] { parameterization });

IHandlerService hService = ... getting handler service ...
hService.executeCommand(pCommand, null);

===============================================================

I think this job can be automated like as follows:

Parameterization parameterization =
  new Parameterization(
      param, parameterValueObject
  );

Since Eclipse workbench knows which parameter type converter is needed 
by referring extension configuration, why do  I have to convert it 
manually. I think it's inappropriate.

Please teach me the best approach if there is.