old_contents: from django.conf.urls import url
  
  from api.logs import views
  
  urlpatterns = [
      url(r'^(?P<log_id>\w+)/$', views.NodeLogDetail.as_view(), name=views.NodeLogDetail.view_name),
      url(r'^(?P<log_id>\w+)/nodes/$', views.LogNodeList.as_view(), name=views.LogNodeList.view_name),
  ]
  
new_contents: from django.conf.urls import url
  
  from api.logs import views
  
  urlpatterns = [
      url(r'^(?P<log_id>\w+)/$', views.NodeLogDetail.as_view(), name=views.NodeLogDetail.view_name),
      url(r'^(?P<log_id>\w+)/nodes/$', views.LogNodeList.as_view(), name=views.LogNodeList.view_name),
      url(r'^(?P<log_id>\w+)/added_contributors/$', views.NodeLogAddedContributors.as_view(), name=views.NodeLogAddedContributors.view_name),
  ]
  
subject: Add /v2/logs/log_id/added_contributors/ to list of URL's.