### Question:
FakeClassnameTags123Api { public Client testClassname(Client body) throws ApiException { ApiResponse<Client> localVarResp = testClassnameWithHttpInfo(body); return localVarResp.getData(); } FakeClassnameTags123Api();  FakeClassnameTags123Api(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); okhttp3.Call testClassnameCall(Client body, final ApiCallback _callback); Client testClassname(Client body); ApiResponse<Client> testClassnameWithHttpInfo(Client body); okhttp3.Call testClassnameAsync(Client body, final ApiCallback<Client> _callback);  }### Answer:
@Test public void testClassnameTest() throws ApiException { Client body = null; Client response = api.testClassname(body); }