when(mockClearScrollBuilder.addScrollId(any(String.class))).thenReturn(mockClearScrollBuilder);
        doAnswer(invocation -> {
            ActionListener<ClearScrollResponse> listener = invocation.getArgument(0);
            listener.onResponse(mock(ClearScrollResponse.class));
            return null;
        }).when(mockClearScrollBuilder).execute(any(ActionListener.class));

        return client.prepareClearScroll();
    }

    @Override
    public ActionFuture<ClearScrollResponse> clearScroll(final ClearScrollRequest request) {
        return client.clearScroll(request);
    }

    @Override
    public void clearScroll(final ClearScrollRequest request, final ActionListener<ClearScrollResponse> listener) {
        client.clearScroll(request, listener);
    }

    @Override