function resolveNaptr
#resolveNaptr(hostname: string): Promise<NaptrRecord[]>Uses the DNS protocol to resolve regular expression-based records (NAPTR records) for the hostname. On success, the Promise is resolved with an array
of objects with the following properties:
flagsserviceregexpreplacementorderpreference
{
  flags: 's',
  service: 'SIP+D2U',
  regexp: '',
  replacement: '_sip._udp.example.com',
  order: 30,
  preference: 100
}
      
    Parameters #
#hostname: string Return Type #
Promise<NaptrRecord[]>