configureDevServerOptions(callback) {
        webpackConfig.configureDevServerOptions(callback);

        return this;
    }
Configure the devServer configuration.

https://webpack.js.org/configuration/dev-server

```
Encore.configureDevServerOptions(function(options) {
    // change the configuration
    options.server = {
        type: 'https',
        options: {
            key: '<your SSL cert key content or path>',
            cert: '<your SSL cert content or path>',
        }
    };
});
```

@param {OptionsCallback<object>} callback
@returns {Encore}