text: """Forms for the ``multilingual_events`` app."""
  from django.contrib import admin
  from django.contrib.admin.widgets import ForeignKeyRawIdWidget
  from django.forms.models import ModelForm
  
  from .models import EventAgendaSession, EventAgendaTalk
  
  
  class EventAgendaAdminWithDocumentMixin(object):
      """
      Mixin for cms plugins that have a FK to ``document_library.Document``.
  
      """
      def __init__(self, *args, **kwargs):
          super(EventAgendaAdminWithDocumentMixin, self).__init__(
              *args, **kwargs)
          self.fields['document'].widget = ForeignKeyRawIdWidget(
              self._meta.model._meta.get_field('document').remote_field,
              admin.site,
          )
  
  
  class EventAgendaSessionForm(EventAgendaAdminWithDocumentMixin, ModelForm):
      """Admin form for the ``EventAgendaSession`` plugin."""
      class Meta:
          model = EventAgendaSession
          fields = '__all__'
  
  
  class EventAgendaTalkForm(EventAgendaAdminWithDocumentMixin, ModelForm):
      """Admin form for the ``EventAgendaSession`` plugin."""
      class Meta:
          model = EventAgendaTalk
          fields = '__all__'
  