code: public ApiResponse<ApiSuccessResponse> loginWithHttpInfo(ModifyLoginData body) throws ApiException {
          com.squareup.okhttp.Call call = loginValidateBeforeCall(body, null, null);
          Type localVarReturnType = new TypeToken<ApiSuccessResponse>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Login (HTTP session only)
  Starts the OAuth 2 flow for the Authorization Code grant type and returns a redirect to the Authentication service. For more information, see the [Authentication API](/reference/authentication/).
  @param body Body Data (required)
  @return ApiResponse&lt;ApiSuccessResponse&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body