code: def umap(path, name=None, include=None, namespace=None, priority=None):
      
      def url_wrapper(view):
          # gets the module name
          module = _find_urls_module(view)
          # gets the view function (checking if it's a class-based view)
          fn = view.as_view() if hasattr(view, 'as_view') else view
  
          if namespace and include:
              raise TypeError(
                  'You can\'t use \'namespace\' and \'include\''
                  ' at the same time!'
              )
  
          if namespace:
              # imports the urlpatterns object
              base = import_string('{}.urls.urlpatterns'.format(module))
              # searchs for the namespace
              urlpatterns_list = [
                  x for x in base
                  if getattr(x, 'namespace', None) == namespace
              ]
              # if the list length is different than 1,
              # then the namespace is either duplicated or doesn't exist
              if len(urlpatterns_list) != 1:
                  raise ValueError(
                      'Namespace \'{}\' not in list.'.format(namespace)
                  )
              # if the namespace was found, get its object
              urlpatterns = urlpatterns_list.pop(0).url_patterns
          else:
              # imports the urlpatterns object
              urlpatterns = import_string('{}.urls.{}'.format(
                  module,
                  include or 'urlpatterns'
              ))
          # appends the url with its given name
          call = (
              urlpatterns.append if priority is None
              else partial(urlpatterns.insert, priority)
          )
          call(url(path, fn, name=name))
          return view
      return url_wrapper
docs: Maps a given URL path, name and namespace to a view.
          Arguments:
              - path: the URL regex, e.g.: '^teste/(?P<pk>[0-9])/$'.
  
          Optional arguments:
              - name: the URL name, which Django uses to identify the URL;
              - include: A custom URL list, previously
                         set on the module's urls.py;
              - namespace: the URL's namespace;
              - priority: the URL's priority;