TODO: document

@param {string} newScope

@private
function(newScope) {
    if ('*' in this.scopeModeMap || newScope === '*') {
      this.rootPaths = ['/'];
    } else if (! (newScope in this.scopeModeMap)) {
      this.rootPaths.push('/' + newScope + '/');
      this.rootPaths.push('/public/' + newScope + '/');
    }
  }