docs: def generate_form_data(self, **kwargs):
          """Create a form dictionary with the key being the element name
          and the value being a list of form element objects.
          """
          # Add elements that are missing from the form.
          self.children = add_missing_children(
              self.contained_children,
              self.children
          )
          # Add children to the keyword arguments.
          kwargs['children'] = self.children
          # Create the form object.
          return FormGenerator(**kwargs)