### Question:
StatisticsApi { public OverviewResponse overview(String projectId) throws ApiException { ApiResponse<OverviewResponse> resp = overviewWithHttpInfo(projectId); return resp.getData(); } StatisticsApi();  StatisticsApi(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); com.squareup.okhttp.Call getReleaseVersionCall(final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); ReleaseVersionResponse getReleaseVersion(); ApiResponse<ReleaseVersionResponse> getReleaseVersionWithHttpInfo(); com.squareup.okhttp.Call getReleaseVersionAsync(final ApiCallback<ReleaseVersionResponse> callback); com.squareup.okhttp.Call overviewCall(String projectId, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); OverviewResponse overview(String projectId); ApiResponse<OverviewResponse> overviewWithHttpInfo(String projectId); com.squareup.okhttp.Call overviewAsync(String projectId, final ApiCallback<OverviewResponse> callback);  }### Answer:
@Test public void overviewTest() throws ApiException { String projectId = null; OverviewResponse response = api.overview(projectId); }