docs: public Config addMerkleTreeConfig(MerkleTreeConfig merkleTreeConfig) {
          final String mapName = merkleTreeConfig.getMapName();
          if (StringUtil.isNullOrEmpty(mapName)) {
              throw new IllegalArgumentException("Merkle tree config must define a map name");
          }
          mapMerkleTreeConfigs.put(mapName, merkleTreeConfig);
          return this;
      }