Sufia::BootstrapBreadcrumbsBuilder for rendering breadcrumbs

This creates a builder class for rendering breadcrumbs.  It's an exact copy of Spotlight's code and is designed to be used with Boostrap's breadcrumb styles.  It can be easily overridden for any local implementor's needs.
I copied that from Spotlight.  Are you sure?  How else would the code get loaded, unless it's configured to load everything under app?