docs: public boolean existsResource(CmsRequestContext context, CmsUUID structureId, CmsResourceFilter filter) {
  
          boolean result = false;
          CmsDbContext dbc = m_dbContextFactory.getDbContext(context);
          try {
              readResource(dbc, structureId, filter);
              result = true;
          } catch (Exception e) {
              result = false;
          } finally {
              dbc.clear();
          }
          return result;
      }