### Question:
FakeClassnameTags123Api { public Client testClassname(Client body) throws IOException { HttpResponse response = testClassnameForHttpResponse(body); TypeReference<Client> typeRef = new TypeReference<Client>() {}; return apiClient.getObjectMapper().readValue(response.getContent(), typeRef); } FakeClassnameTags123Api();  FakeClassnameTags123Api(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); Client testClassname(Client body); Client testClassname(Client body, Map<String, Object> params); HttpResponse testClassnameForHttpResponse(Client body); HttpResponse testClassnameForHttpResponse(java.io.InputStream body, String mediaType); HttpResponse testClassnameForHttpResponse(Client body, Map<String, Object> params);  }### Answer:
@Test public void testClassnameTest() throws IOException { Client client = null; Client response = api.testClassname(client); }