pem.getRequiredNameServers (internal)

This method is supported by Operations starting from version 2.8.

If Domain is transferred from one Operations Account to another one, it uses DNS Servers according to Domain Subscription (it contains DNS Hosting) of the source Account. This method returns DNS Servers, which should serve the Domain according to Domain Subscription of target Account.

The method has the following input parameters:

Name	Type	Short Description
`domain_name`	string	Name of the Domain to return DNS Servers for.

The method returns an array of the following structures:

Name	Type	Short Description
`ns`	string	Hostname of DNS Server.
`ip_address`	string	IP Address of DNS Server.