code: protected CmsUser getUser(CmsUUID userId) {
  
          CmsDbContext dbc = m_dbContextFactory.getDbContext();
          try {
              return m_driverManager.readUser(dbc, userId);
          } catch (CmsException e) {
              dbc.rollback();
              LOG.error(e.getLocalizedMessage(), e);
          } finally {
              dbc.clear();
          }
          return null;
      }
docs: Returns the user identified by the given id.<p>
  
  @param userId the id of the user to retrieve
  
  @return the user identified by the given id