private static void addGuards(@NotNull SwitchStatement switchStatement, @NotNull PatternContainer patternContainer) {
      for (int i = 0; i < switchStatement.getCaseStatements().size(); i++) {
        Statement currentCaseStatement = switchStatement.getCaseStatements().get(i);
        List<PatternContainer.PatternStatement> patterns = patternContainer.getPatterns(currentCaseStatement);
        if (patterns != null && patterns.size() == 1) {
          Statement newStatement = patterns.get(0).caseStatement();
          switchStatement.replaceStatement(switchStatement.getCaseStatements().get(i), newStatement);
          switchStatement.getCaseStatements().set(i, newStatement);
          switchStatement.getCaseEdges().get(i).forEach(edge -> {
                                                          edge.setDestination(patterns.get(0).caseStatement());
                                                        }
          );
          Exprent guard = patterns.get(0).guard();
          if (guard != null) {
            switchStatement.addGuard(switchStatement.getCaseStatements().get(i), guard);
          }
        }
      }
    }
private static void addGuards(@NotNull SwitchStatement switchStatement, @NotNull PatternContainer patternContainer)