code: public ApiResponse<ApiSuccessResponse> initProvisioningWithHttpInfo() throws ApiException {
          com.squareup.okhttp.Call call = initProvisioningValidateBeforeCall(null, null);
          Type localVarReturnType = new TypeToken<ApiSuccessResponse>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Init Session
  The GET operation will init user session.
  @return ApiResponse&lt;ApiSuccessResponse&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body