anchor.diff:  
       yarnSite = mkOption {
         default = {};
  +      type = types.attrsOf types.anything;
         example = literalExample ''
           {
             "yarn.resourcemanager.ha.id" = "resourcemanager1";
  
positive.code: 
      hdfsSite = mkOption {
        default = {};
        example = literalExample ''
          {
            "dfs.nameservices" = "namenode1";
  
negative.code:   options.services.hadoop = {
      coreSite = mkOption {
        default = {};
        type = types.attrsOf types.anything;
        example = literalExample ''
          {
            "fs.defaultFS" = "hdfs://localhost";
  