The http_generic_client.dart file outlines a Dart implementation of a generic HTTP client using the Dio package for network requests. It’s designed to facilitate CRUD (Create, Read, Update, Delete) operations for various models representing different resources in an application.

​
Steps for Extending Functionality

When adding a new endpoint to your application, follow these steps to integrate it with the generic HTTP client:

​
1. Model and Endpoint Registration

For each new model representing a resource, ensure you have a fromJson method defined for JSON serialization. Then, register this model and its endpoint in the respective factories: 
// Registering a new model and its endpoint
jsonFactories[NewModel] = (Map<String, dynamic> json) => NewModel.fromJson(json);
unencodedPathFactories[NewModel] = '/new-models';

​
2. Extend the Generic HTTP Client

Create a new file, for example, http_<schemaname>_client.dart. In this file, extend the generic RestApiClient for your specific model. 
class HttpNewModelClient extends RestApiClient<NewModel> {
  // Implement additional methods specific to NewModel if needed
}

​
3. Implement Additional Methods (Optional)

If the default CRUD methods are not sufficient, you can implement additional methods within your new HTTP client class. 
class HttpNewModelClient extends RestApiClient<NewModel> {
  // Example of an additional method
  Future<NewModel?> customMethod({required String parameter}) async {
    // Implementation of the custom method
  }
}

​
Summary

By following these steps, you can easily extend the functionality of the generic HTTP client for any new models and endpoints you add to your application. This approach maintains consistency, simplifies the integration of new resources, and provides a clear structure for your application’s API interactions.