如何在usingaWizardNewFileCreationPage的同时结合使用BasicNewFileResourceWizard和初始文件上下文的文件扩展名？

import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;

public class CustomNewFileWizard extends Wizard implements INewWizard {
    private String fileExtension;
    private IProject project;

    public CustomNewFileWizard(String fileExtension) {
        this.fileExtension = fileExtension;
        setWindowTitle("Create New File");
    }

    @Override
    public void init(IWorkbench workbench, IStructuredSelection selection) {
        if (selection.getFirstElement() instanceof IProject) {
            this.project = (IProject) selection.getFirstElement();
        }
    }

    @Override
    public boolean performFinish() {
        try {
            IResource resource = project.getLocation().append("newfile." + fileExtension).toFile().getCanonicalFile();
            IDE.create(resource, project);
            return true;
        } catch (CoreException e) {
            e.printStackTrace();
            return false;
        }
    }

    @Override
    public void addPages() {
        // Add custom pages if needed
    }
}