This filter is applied within the bcn_breadcrumb_trail class in the display_loop() function. This filter was introduced in version 6.3 to be an easier to use version of bcn_display_attributes. It receives three parameters:
- $attribute_array – (array)(required) A key-value pair array of the attributes placed in the
litag that wraps the each breadcrumb. Keys are attribute names, values is an array of values for the attribute - $type – (array)(optional) The array of type strings for the breadcrumb
- $id – (int|NULL)(optional) The ID of the resource represented by the breadcrumb, will be NULL if no suitable ID exists