private boolean isShowNewInstancesEvent(@NotNull MouseEvent e) {
    ClassesTable table = getTable();
    final int col = table.columnAtPoint(e.getPoint());
    final int row = table.rowAtPoint(e.getPoint());
    if (col == -1 || row == -1 || table.convertColumnIndexToModel(col) != DIFF_COLUMN_INDEX) {
      return false;
    }

    final int modelRow = table.convertRowIndexToModel(row);

    final JavaTypeInfo ref = (JavaTypeInfo)table.getModel().getValueAt(modelRow, CLASSNAME_COLUMN_INDEX);
    final ConstructorInstancesTracker tracker = myConstructorTrackedClasses.getOrDefault(ref.getReferenceType(), null);

    return tracker != null && tracker.isReady() && tracker.getCount() > 0;
  }
private boolean isShowNewInstancesEvent(@NotNull MouseEvent e)