import com.haulmont.cuba.core.entity.FileDescriptor

import com.haulmont.cuba.core.app.FileStorageAPI

import java.io.InputStream

import java.io.InputStreamReader

import java.io.ByteArrayOutputStream

import org.apache.commons.io.IOUtils

import java.nio.charset.StandardCharsets;

import com.opencsv.CSVReader;

import org.apache.commons.collections.CollectionUtils

import java.util.stream.Collectors;

FileStorageAPI fileStorageAPI=AppBeans.get(FileStorageAPI.NAME);

String id='e068eda2-d8df-5f43-1b30-7f86de1a550c'

FileDescriptor fd = dataManager.load(FileDescriptor.class)

.id(UuidProvider.fromString(id))

.view(View.MINIMAL)

.optional().orElse(null);

if(fd == null){throw new RuntimeException("fileNotFound")}

InputStream inputStream=fileStorageAPI.openStream(fd)

CSVReader reader = new CSVReader(new InputStreamReader(inputStream, "UTF-8"));

List<String> listInn = reader.readAll().stream()

.map{e->e[0]}.collect(Collectors.toList())