如何自动滚动StyledText (SWT)

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class AutoScrollStyledTextExample {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());

        // 创建ScrolledComposite控件
        ScrolledComposite scrolledComposite = new ScrolledComposite(shell, SWT.V_SCROLL | SWT.H_SCROLL);

        // 创建StyledText控件
        StyledText styledText = new StyledText(scrolledComposite, SWT.MULTI | SWT.WRAP);
        styledText.setText("这里是大量的文本内容...");

        // 设置StyledText为ScrolledComposite的内容
        scrolledComposite.setContent(styledText);

        // 设置自动滚动
        scrolledComposite.setExpandVertical(true);
        scrolledComposite.setExpandHorizontal(true);
        scrolledComposite.setMinSize(styledText.computeSize(SWT.DEFAULT, SWT.DEFAULT));

        shell.setSize(400, 300);
        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }
}