code: function _skipBytes (n, fn) {
    assert(!this._parserCallback, 'there is already a "callback" set!');
    assert(n > 0, 'can only skip > 0 bytes, got "' + n + '"');
    if (!this._parserInit) init(this);
    debug('skipping %o bytes', n);
    this._parserBytesLeft = n;
    this._parserCallback = fn;
    this._parserState = SKIPPING;
  }
docs: Skips over the next `n` bytes, then invokes `fn` once that amount has
  been discarded.
  
  @param {Number} n the number of bytes to discard
  @param {Function} fn callback function to invoke when `n` bytes have been skipped
  @api public