public Argument evaluate(ContextStack context, Argument arg1)
public Argument evaluate(ContextStack context, ArrayList args)
	public Argument evaluate(ContextStack context, Argument arg1)		throws MapyrusException	{		/* 		 * Generate name for temporary file with given suffix. 		 */		Argument retval = new Argument(Argument.STRING,			TransientFileFactory.generate(arg1.toString(), Constants.HTTP_TEMPFILE_LIFESPAN));		return(retval);	}