@Override
  protected void setLabel(SimpleColoredComponent component) {
    final MatchVariableConstraint constraint = myTable.getMatchVariable();
    if (constraint == null) {
      return;
    }
    final Configuration referencedConfiguration =
      ConfigurationManager.getInstance(myTable.getProject()).findConfigurationByName(constraint.getReferenceConstraint());
    if (referencedConfiguration != null) {
      component
        .append(SSRBundle.message("reference.0.label", (constraint.isInvertReference() ? "!" : "") + referencedConfiguration.getName()));
    }
  }
@Override
  protected void setLabel(SimpleColoredComponent component)