'Delete documents from the index.
\'ids\' should be a list of fullnames'

def delete_ids(self, ids):

    version = self._version()
    deletes = [etree.Element('delete', id=id_, version=str(version)) for id_ in ids]
    batch = etree.Element('batch')
    batch.extend(deletes)
    return self.send_documents(batch)
