code: public Set<String> selectProjectPermissionsOfAnonymous(DbSession dbSession, String projectUuid) {
      return mapper(dbSession).selectProjectPermissionsOfAnonymous(projectUuid);
    }
docs: Loads all the permissions granted to anonymous for the specified project <strong>stored in *_ROLES
  tables</strong>.
  An empty Set is returned if anonymous user has no permissions on the project.
  
  <strong>This method does not support public components</strong>