Creating a new feature summary

This chapter summarizes the steps that you need to take to create a custom feature:

1. Create a FullNodeBuilder extension method for your feature. There is no specific naming convention for these methods, but something like UseFeatureX() would be ideal. The extension method will need its own static class. Again, a name like FullNodeBuilderXExtension is ideal for the class but this is not enforced.

2. Create a class for the feature, which inherits from FullNodeFeature, and implement at least the IFullNodeFeature.InitializeAsync() method.

3. Populate your feature extensions method using the same pattern found in the other extension methods:

   1. Call FullNodeBuilder.ConfigureFeature() with a lambda function as the parameter.

   2. Lambda A: Register your feature class with IFeatureCollection.AddFeature() and begin a fluid interface.

   3. If required, register dependencies by extending the fluid interface with calls to IFeatureRegistration.DependOn().

   4. Extend the fluid interface by making a call to IFeatureRegistration.FeatureServices() with a lambda function as the parameter.

   5. Lambda B: Register your feature interfaces and classes as singleton services using IServiceCollection.AddSingleton().

4. Place a call to your feature extension method in the Full Node Builder fluid interface found in Main().