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