@property
@abc.abstractmethod
def annotation_urls(self):
    'Dictionary passed to the DownloadManager to download annotations.\n\n    An example:\n      {"test_annotations": "https://somewebpage.com/data/openimages/test.txt"}\n\n    Returns:\n      A dictionary whose values are the URLs to download the annotations of the\n      dataset, and the keys are some short string identifying the URL.\n      This dictionary is passed to the DownloadManager.\n    '
Dictionary passed to the DownloadManager to download annotations.

An example:
  {"test_annotations": "https://somewebpage.com/data/openimages/test.txt"}

Returns:
  A dictionary whose values are the URLs to download the annotations of the
  dataset, and the keys are some short string identifying the URL.
  This dictionary is passed to the DownloadManager.
@property
@abc.abstractmethod
def annotation_urls(self):
    'Dictionary passed to the DownloadManager to download annotations.\n\n    An example:\n      {"test_annotations": "https://somewebpage.com/data/openimages/test.txt"}\n\n    Returns:\n      A dictionary whose values are the URLs to download the annotations of the\n      dataset, and the keys are some short string identifying the URL.\n      This dictionary is passed to the DownloadManager.\n    '