private static boolean canUnwrapBlock(@NotNull PsiCodeBlock block, PsiCodeBlock parentBlock, List<PsiExpression> expressions) {
    for (PsiStatement statement : block.getStatements()) {
      if (statement instanceof PsiDeclarationStatement declaration) {
        if (expressions.size() > 1) return false;
        for (PsiElement element : declaration.getDeclaredElements()) {
          PsiResolveHelper resolveHelper = PsiResolveHelper.getInstance(block.getProject());
          if (element instanceof PsiVariable variable) {
            String name = variable.getName();
            if (name != null && resolveHelper.resolveReferencedVariable(name, parentBlock) != null) {
              return false;
            }
          }
          if (element instanceof PsiClass psiClass) {
            String name = psiClass.getName();
            if (name != null && resolveHelper.resolveReferencedClass(name, parentBlock) != null) {
              return false;
            }
          }
        }
      }
    }
    return true;
  }
private static boolean canUnwrapBlock(@NotNull PsiCodeBlock block, PsiCodeBlock parentBlock, List<PsiExpression> expressions)