private static @Nullable PsiIfStatement getTopLevelIfStatement(PsiCodeBlock block, PsiElement commonParent) {
    while (true) {
      PsiIfStatement ifStatement = PsiTreeUtil.getNonStrictParentOfType(commonParent, PsiIfStatement.class);
      if (ifStatement == null) return null;
      PsiElement parent = ifStatement.getParent();
      if (parent == block) return ifStatement;
      commonParent = parent;
    }
  }
private static @Nullable PsiIfStatement getTopLevelIfStatement(PsiCodeBlock block, PsiElement commonParent)