code: public I_CmsHistoryDriver getHistoryDriver(CmsDbContext dbc) {
  
          if ((dbc == null) || (dbc.getProjectId() == null) || dbc.getProjectId().isNullUUID()) {
              return m_historyDriver;
          }
          I_CmsHistoryDriver driver = dbc.getHistoryDriver(dbc.getProjectId());
          return driver != null ? driver : m_historyDriver;
  
      }
docs: Returns the history driver for a given database context.<p>
  
  @param dbc the database context
  @return the history driver for the database context