### Question:
FakeClassnameTags123Api { public Client testClassname(Client body) throws ApiException { return testClassnameWithHttpInfo(body).getData(); } FakeClassnameTags123Api();  FakeClassnameTags123Api(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); Client testClassname(Client body); ApiResponse<Client> testClassnameWithHttpInfo(Client body);  }### Answer:
@Test public void testClassnameTest() throws ApiException { Client body = null; Client response = api.testClassname(body); }