Fixed #33651 -- Added support for prefetching GenericForeignKey.

Co-authored-by: revanthgss <revanthgss@almabase.com>
Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>

tests/one_to_one/tests.py

@@ -1,5 +1,6 @@
 from django.db import IntegrityError, connection, transaction
 from django.test import TestCase
+from django.utils.deprecation import RemovedInDjango60Warning
 
 from .models import (
     Bar,
@@ -606,3 +607,23 @@ class OneToOneTests(TestCase):
         self.b1.place_id = self.p2.pk
         self.b1.save()
         self.assertEqual(self.b1.place, self.p2)
+
+    def test_get_prefetch_queryset_warning(self):
+        places = Place.objects.all()
+        msg = (
+            "get_prefetch_queryset() is deprecated. Use get_prefetch_querysets() "
+            "instead."
+        )
+        with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
+            Place.bar.get_prefetch_queryset(places)
+
+    def test_get_prefetch_querysets_invalid_querysets_length(self):
+        places = Place.objects.all()
+        msg = (
+            "querysets argument of get_prefetch_querysets() should have a length of 1."
+        )
+        with self.assertRaisesMessage(ValueError, msg):
+            Place.bar.get_prefetch_querysets(
+                instances=places,
+                querysets=[Bar.objects.all(), Bar.objects.all()],
+            )