### Question:
MixTaxonomyApi { public String retrieveAll() throws ApiException { ApiResponse<String> resp = retrieveAllWithHttpInfo(); return resp.getData(); } MixTaxonomyApi();  MixTaxonomyApi(ApiClient apiClient); ApiClient getApiClient(); void setApiClient(ApiClient apiClient); com.squareup.okhttp.Call retrieveAllCall(final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener); String retrieveAll(); ApiResponse<String> retrieveAllWithHttpInfo(); com.squareup.okhttp.Call retrieveAllAsync(final ApiCallback<String> callback);  }### Answer:
@Test public void retrieveAllTest() throws ApiException { String response = api.retrieveAll(); }