code: def get(cls, blob_key, **ctx_options):
      
      fut = cls.get_async(blob_key, **ctx_options)
      return fut.get_result()
docs: Retrieve a BlobInfo by key.
  
      Args:
        blob_key: A blob key.  This may be a str, unicode or BlobKey instance.
        **ctx_options: Context options for Model().get_by_id().
  
      Returns:
        A BlobInfo entity associated with the provided key,  If there was
        no such entity, returns None.