private static void doCommitTransaction(
      @NotNull Document document, @NotNull DocumentChangeTransaction documentChangeTransaction) {
    DocumentEx ex = (DocumentEx) document;
    ex.suppressGuardedExceptions();
    try {
      boolean isReadOnly = !document.isWritable();
      ex.setReadOnly(false);
      final Set<Pair<MutableTextRange, StringBuffer>> affectedFragments =
          documentChangeTransaction.getAffectedFragments();
      for (final Pair<MutableTextRange, StringBuffer> pair : affectedFragments) {
        final StringBuffer replaceBuffer = pair.getSecond();
        final MutableTextRange range = pair.getFirst();
        if (replaceBuffer.length() == 0) {
          ex.deleteString(range.getStartOffset(), range.getEndOffset());
        } else if (range.getLength() == 0) {
          ex.insertString(range.getStartOffset(), replaceBuffer);
        } else {
          ex.replaceString(range.getStartOffset(), range.getEndOffset(), replaceBuffer);
        }
      }

      ex.setReadOnly(isReadOnly);
      // if(documentChangeTransaction.getChangeScope() != null) {
      //
      // LOG.assertTrue(document.getText().equals(documentChangeTransaction.getChangeScope().getText()),
      //                 "Psi to document synchronization failed (send to IK)");
      // }
    } finally {
      ex.unSuppressGuardedExceptions();
    }
  }
  private static void doCommitTransaction(
      @NotNull Document document, @NotNull DocumentChangeTransaction documentChangeTransaction) {
    DocumentEx ex = (DocumentEx) document;
    ex.suppressGuardedExceptions();
    try {
      boolean isReadOnly = !document.isWritable();
      ex.setReadOnly(false);

      for (Map.Entry<TextRange, CharSequence> entry :
          documentChangeTransaction.myAffectedFragments.descendingMap().entrySet()) {
        ex.replaceString(
            entry.getKey().getStartOffset(), entry.getKey().getEndOffset(), entry.getValue());
      }

      ex.setReadOnly(isReadOnly);
    } finally {
      ex.unSuppressGuardedExceptions();
    }
  }
 @Override
 public void suppressGuardedExceptions() {
   myDelegate.suppressGuardedExceptions();
 }