class Report(models.Model):
    name = models.CharField(max_length=255)
slug = AutoSlugField(_('slug'), populate_from='name')
wells = models.ManyToManyField(Well, null=True)
uuid = UUIDField(editable=False, blank=True, version=4, unique=True)
nodes = generic.GenericRelation(Node)
r = Report.objects.get(id=1)
nodes = r.nodes.all()
retrieving the 'many' end of a Generic Foreign Key relationship in Django