code: public ApiResponse<ApiSuccessResponse> importFileWithHttpInfo(File csvfile, Boolean validateBeforeImport) throws ApiException {
          com.squareup.okhttp.Call call = importFileValidateBeforeCall(csvfile, validateBeforeImport, null, null);
          Type localVarReturnType = new TypeToken<ApiSuccessResponse>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Import users.
  Import users in the specified CSV/XLS file.
  @param csvfile The CSV/XLS file to import. (optional)
  @param validateBeforeImport Specifies whether the Provisioning API should validate the file before the actual import takes place. (optional, default to false)
  @return ApiResponse&lt;ApiSuccessResponse&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body