How Can I Use a Dynamic Name or Function to Change the Sanity Desk List Items?

export default {
  name: 'navigationItem',
  title: 'Navigation Item',
  fields: [
    ...
  ],
  preview: {
    select: {
      title: 'route.slug.current',
    }
  }
}

preview: {
    select: {
      title: 'route.slug.current',
    },
    prepare({ title }) {
      return {
        title: title ? `/${title}` : 'No route selected',
      };
    },
  },