### Question:
FetchAuthenticatedUserDetailsApi { public GetUserDetailsResponse fetchAuthenticatedUserData(String accessToken) throws ApiException { ApiResponse<GetUserDetailsResponse> resp = fetchAuthenticatedUserDataWithHttpInfo(accessToken); return resp.getData(); } FetchAuthenticatedUserDetailsApi();  FetchAuthenticatedUserDetailsApi(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); com.squareup.okhttp.Call fetchAuthenticatedUserDataCall(String accessToken, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); GetUserDetailsResponse fetchAuthenticatedUserData(String accessToken); ApiResponse<GetUserDetailsResponse> fetchAuthenticatedUserDataWithHttpInfo(String accessToken); com.squareup.okhttp.Call fetchAuthenticatedUserDataAsync(String accessToken, final ApiCallback<GetUserDetailsResponse> callback);  }### Answer:
@Test public void fetchAuthenticatedUserDataTest() throws ApiException { String accessToken = null; GetUserDetailsResponse response = api.fetchAuthenticatedUserData(accessToken); }