docs: protected List<CmsProperty> getOpenCmsProperties(Map<String, PropertyData<?>> properties) {
  
          List<CmsProperty> cmsProperties = new ArrayList<CmsProperty>();
          for (Map.Entry<String, PropertyData<?>> entry : properties.entrySet()) {
              String propId = entry.getKey();
              if (propId.startsWith(CmsCmisTypeManager.PROPERTY_PREFIX)) {
                  String propName = propId.substring(CmsCmisTypeManager.PROPERTY_PREFIX.length());
                  String value = (String)entry.getValue().getFirstValue();
                  if (value == null) {
                      value = "";
                  }
                  cmsProperties.add(new CmsProperty(propName, value, null));
              }
          }
          return cmsProperties;
      }