docs: function BufferStreamReader (data, options) {
    if (!(this instanceof BufferStreamReader)) {
      return new BufferStreamReader(data);
    }
  
    if (!options) {
      options = {};
    }
  
    stream.Readable.call(this, options);
  
    this._data = null;
    this._chunkSize = options.chunkSize || -1;
  
    if (typeof data === 'string') {
      this._data = new Buffer(data, options.encoding || 'utf8');
    } else if (Buffer.isBuffer(data)) {
      this._data = data;
    }
  }