docs: function iterateWriteArray () {
      if (!isIterating()) { return undefined; }
  
      let data = iterateData;
      let content = data.collection[data.i];
  
      data.i++;
  
      if (data.i >= data.collection.length) {
          resetIterateData();
  
          writable.write(content, 'utf8', onWriteFinish);
      } else {
          writable.write(content, 'utf8', iterateWriteArray);
      }
  }