code: function amf0decLongString(buf) {
      var sLen = buf.readUInt32BE(1);
      return { len: 5 + sLen, value: buf.toString('utf8', 5, 5 + sLen) }
  }
docs: AMF0 Decode Long String
  @param buf
  @returns {{len: *, value: (*|string|String)}}