<div
role="button"
class="accToggle"
data-src="path/file.html#toggleIdContent"
data-defaultopen="true"
data-insert="insertionPointElementID"
data-toggleclass="togglePressed"
id="uniqueID"
> ... </div>

Or

<div
role="button"
class="accToggle"
data-internal="toggleIdContent"
data-defaultopen="true"
data-insert="insertionPointElementID"
data-toggleclass="togglePressed"
id="uniqueID"
> ... </div>