def delete(self, **options):
    fut = delete_async(self.key(), **options)
    fut.get_result()
Extracts widget content from rendred HTML
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/ndb/blobstore.py/BlobInfo.delete--crossover with--dataset/ETHPy150Open treeio/treeio/treeio/core/dashboard/views.py/_get_widget_content