docs: private NodeSetMerge getNodeSetMerge() {
          if (projectConfig.hasProperty(PROJECT_RESOURCES_MERGE_NODE_ATTRIBUTES) && "false".equals(
                  projectConfig.getProperty
                          (PROJECT_RESOURCES_MERGE_NODE_ATTRIBUTES))) {
              return new AdditiveListNodeSet();
          }
          return new MergedAttributesNodeSet();
      }