Merge "Fix that the file is not correctly flushed to the disk"

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.PrintWriter;

import java.nio.file.Files;

import java.text.ParseException;

import java.time.Instant;

                    "extensionVersions", extensionVersionsToJson(rollback.getExtensionVersions()));

            fos = file.startWrite();

            PrintWriter pw = new PrintWriter(fos);

            pw.println(dataJson.toString());

            pw.close();

            fos.write(dataJson.toString().getBytes());

            fos.flush();

            file.finishWrite(fos);

        } catch (JSONException | IOException e) {

            Slog.e(TAG, "Unable to save rollback for: " + rollback.info.getRollbackId(), e);