private static void addPseudoValuationTansactions(
      Portfolio portfolio,
      CurrencyConverter converter,
      ReportingPeriod period,
      Map<Security, SecurityPerformanceRecord> records) {
    PortfolioSnapshot snapshot =
        PortfolioSnapshot.create(portfolio, converter, period.getStartDate());
    for (SecurityPosition position : snapshot.getPositions()) {
      records
          .get(position.getSecurity())
          .addTransaction(new DividendInitialTransaction(position, period.getStartDate()));
    }

    snapshot = PortfolioSnapshot.create(portfolio, converter, period.getEndDate());
    for (SecurityPosition position : snapshot.getPositions()) {
      records
          .get(position.getSecurity())
          .addTransaction(new DividendFinalTransaction(position, period.getEndDate()));
    }
  }
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  public Map<InvestmentVehicle, AssetPosition> getPositionsByVehicle() {
    Map<InvestmentVehicle, AssetPosition> answer = new HashMap<InvestmentVehicle, AssetPosition>();

    long assets = getAssets();

    for (SecurityPosition p : jointPortfolio.getPositions())
      answer.put(p.getSecurity(), new AssetPosition(p.getSecurity(), p, assets));

    for (AccountSnapshot a : accounts) {
      SecurityPosition sp = new SecurityPosition(null);
      sp.setShares(Values.Share.factor());
      sp.setPrice(new SecurityPrice(getTime(), a.getFunds()));
      answer.put(a.getAccount(), new AssetPosition(a.getAccount(), sp, assets));
    }
    return answer;
  }
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  public static PortfolioSnapshot merge(List<PortfolioSnapshot> snapshots) {
    if (snapshots.isEmpty())
      throw new RuntimeException(
          "Error: PortfolioSnapshots to be merged must not be empty"); //$NON-NLS-1$

    Portfolio portfolio = new Portfolio();
    portfolio.setName(Messages.LabelJointPortfolio);

    Map<Security, SecurityPosition> securities = new HashMap<Security, SecurityPosition>();
    for (PortfolioSnapshot s : snapshots) {
      portfolio.addAllTransaction(s.getSource().getTransactions());
      for (SecurityPosition p : s.getPositions()) {
        SecurityPosition pos = securities.get(p.getSecurity());
        if (pos == null) securities.put(p.getSecurity(), p);
        else securities.put(p.getSecurity(), SecurityPosition.merge(pos, p));
      }
    }

    return new PortfolioSnapshot(
        portfolio,
        snapshots.get(0).getTime(),
        new ArrayList<SecurityPosition>(securities.values()));
  }