@Override
  protected void checkExpression(@NotNull GrExpression selectedExpr) {
    GrVariable variable = GrIntroduceHandlerBase.resolveLocalVar(selectedExpr);
    if (variable != null) {
      checkVariable(variable);
    }
    else {
      selectedExpr.accept(new ConstantChecker(selectedExpr, selectedExpr));
    }
  }
@Override
  protected void checkExpression(@NotNull GrExpression selectedExpr)