docs: @Nullable
    public static ISessionWebScope getSessionWebScopeOfID (@Nullable final String sScopeID)
    {
      final ISessionScope aSessionScope = ScopeSessionManager.getInstance ().getSessionScopeOfID (sScopeID);
      if (aSessionScope == null)
        return null;
      if (!(aSessionScope instanceof ISessionWebScope))
      {
        if (LOGGER.isWarnEnabled ())
          LOGGER.warn ("The passed scope ID '" +
                          sScopeID +
                          "' is not a session web scope: " +
                          aSessionScope.toString ());
        return null;
      }
      return (ISessionWebScope) aSessionScope;
    }