@Test
public void testSendRequestNoContentResponse() throws Exception {

    Mockito.when(responseEntity.getContent()).thenReturn(new ByteArrayInputStream("".getBytes()));
    Mockito.when(responseStatus.getStatusCode()).thenReturn(204);
    String result = restClient.sendRequest(SESSION_ID, new Request(HttpMethod.GET, ""));
    assertNotNull(result);
    assertEquals("Return must be \"{}\"", "{}", result);
}