Can you specify a "data-target" for Bootstrap which refers to a sibling DOM element without using an ID?

I am dynamically adding Collapsable elements to a page. Bootstrap uses the "data-target" attribute to specify which element the collapse toggle applies to.

From the docs:

The data-target attribute accepts a css selector

Is there a way to write a selector which specifies the next sibling of the parent element? All of the examples from the docs seem to use selections by ID.

Specifically the HTML looks like:

<div class="accordion-group">
<div class="accordion-heading">
  <a class="accordion-toggle" data-toggle="collapse" data-target="#collapseOne">
    Generated Title
  </a>
</div>
<div id="collapseOne" class="accordion-body collapse in">
  <div class="accordion-inner">
    Generated Content... this is big and sometimes needs collapsing
  </div>
</div>
</div>

I would like to write something like (pseudo code using jquery syntax illegally):

<a class="accordion-toggle" data-toggle="collapse" data-target="$(this).parent().next()">

But I am starting to suspect this may not be possible with CSS selectors.

Right now as a workaround I am generating a new ID (an incrementing number appended to a string) when I create the element.

Is there a nicer approach using a selector? Should I be using some post-creation javascript to set the data-target attribute? Is generating IDs for dynamic content the standard approach?