code: def get_fieldsets(self):
          
  
          if self.fieldsets:
              return self.fieldsets
          form_class = self.get_form_class()
          form = self.get_form(form_class)
          fields = form.base_fields.keys()
  
          readonly_fields = self.get_readonly_fields()
          if readonly_fields:
              fields.extend(readonly_fields)
  
          return [(None, {'fields': fields})]
docs: Hook for specifying fieldsets. If 'self.fieldsets' is
          empty this will default to include all the fields in
          the form with a title of None.