This entity mapper is used by Islandora and Crayfish to map Drupal UUIDs to Fedora URIs in a stable and consistent manner.
This code is a library dependency of Islandora and Crayfish-Commons, so there is no configuration or individual usage.
Further documentation for this module is available on the Islandora 8 documentation site.
Having problems or solved a problem? Check out the Islandora google groups for a solution.