def METHOD_NAME(self, ds, documents):
    """Contrary to other Document Stores, SQLDocumentStore doesn't raise if the index is empty"""
    ds.write_documents(documents, index="custom_index")
    assert ds.get_document_count(index="custom_index") == len(documents)
    ds.delete_index(index="custom_index")
    assert ds.get_document_count(index="custom_index") == 0