Creating a bundle for a content entity type
Bundles allow you to have different variations of a content entity. All bundles share the same base field definitions but not configured fields. This allows each bundle to have its own custom fields. Display modes are also dependent on a specific bundle. This allows each bundle to have its own configuration for the form mode and view mode.
Using the custom entity from the previous recipe, we will add a configuration entity to act as the bundle. This will allow you to have different message types for multiple custom field configurations.
You will need a custom module to place the code into in order to implement a configuration entity type. Create an
src directory for your classes. We need a ...