code: function extractIdentifier(packet) {
    let identifier = identifiers.REELYACTIVE_OUI36 + packet.substr(0,7);
  
    return {
        identifier: identifier,
        identifierType: identifiers.TYPE_EUI64
    }
  }
docs: Extract the identifier from the given source packet.
  @param {String} packet The source packet as a hexadecimal string.
  @return {Object} The identifier and its type.