Returns a list of phone numbers that are opted out, meaning you cannot send SMS messages to them.
sns_list_phone_numbers_opted_out(nextToken)A NextToken string is used when you call the
ListPhoneNumbersOptedOut action to retrieve additional records that
are available after the first page of results.
svc$list_phone_numbers_opted_out( nextToken = "string" )
The results for ListPhoneNumbersOptedOut are paginated, and each page
returns up to 100 phone numbers. If additional phone numbers are
available after the first page of results, then a NextToken string
will be returned. To receive the next page, you call
ListPhoneNumbersOptedOut again using the NextToken string received
from the previous call. When there are no more records to return,
NextToken will be null.