static @Nullable PsiExpression extractAnchor(@Nullable PsiExpression target) {
    target = PsiUtil.skipParenthesizedExprDown(target);
    if (target instanceof PsiReferenceExpression ||
        target instanceof PsiMethodCallExpression ||
        target != null && propagateThroughExpression(target, DfTypes.LONG) != null) {
      return target;
    }
    return null;
  }
static @Nullable PsiExpression extractAnchor(@Nullable PsiExpression target)