docs: public I_CmsPrincipal lookupPrincipal(CmsRequestContext context, String principalName) {
  
          CmsDbContext dbc = m_dbContextFactory.getDbContext(context);
          I_CmsPrincipal result = null;
          try {
              result = m_driverManager.lookupPrincipal(dbc, CmsOrganizationalUnit.removeLeadingSeparator(principalName));
          } finally {
              dbc.clear();
          }
          return result;
      }