code: def get_blob_data(self, tag_target='asset', force=False):
          
          if hasattr(self, '_blob_data') and not force:
              return self._blob_data
  
          if six.PY2:
              self._blob_data = six.binary_type('')
          elif six.PY3:
              self._blob_data = six.binary_type('', encoding='ascii')
          asset_contents = self.contents.filter(tag=tag_target)
          for asset_content in asset_contents:
              blobs = asset_content.stream.get_blobs()
              for blob in blobs:
                  self._blob_data += six.binary_type(blob.data)
          return self._blob_data
docs: get asset version content using pg large object streams
  
          :param bool force: False by default, forces get content from database
              instead of using cached value
          :rtype: str
          :return: content in raw format