docs: private void cmisProperties( CmisObject object,
                                   DocumentWriter writer ) {
          // convert properties
          List<Property<?>> list = object.getProperties();
          for (Property<?> property : list) {
              String pname = properties.findJcrName(property.getId());
              if (pname != null) {
                  writer.addProperty(pname, properties.jcrValues(property));
              }
          }
      }