docs: public ApiResponse<ApiSuccessResponse> validateImportFileWithHttpInfo(File csvfile) throws ApiException {
          com.squareup.okhttp.Call call = validateImportFileValidateBeforeCall(csvfile, null, null);
          Type localVarReturnType = new TypeToken<ApiSuccessResponse>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }