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1. Under the hoods, the @api_view decorator is:

   1. A wrapper that converts a function-based view into a subclass of the rest_framework.views.APIView class.

   2. A wrapper that converts a function-based view into a serializer.

   3. A wrapper that converts a function-based view into a subclass of the rest_framework.views.api_view class.

2. The browsable API, a feature included in Django REST Framework that:

   1. Generates human-friendly JSON output for each resource whenever the request specifies application/json as the value for the Content-type key in the request header.

   2. Generates human-friendly HTML output for each resource whenever the request specifies text/html as the value for the Content-type key in the request header.

   3. Generates human-friendly HTML output for each resource whenever the request specifies application/json as the value for the Content-type key in the request header.

3. The rest_framework.serializers.ModelSerializer class:

   1. Automatically populates both a set of default constraints...