code: public void billingAccount_voicemail_serviceName_migrateOnNewVersion_POST(String billingAccount, String serviceName) throws IOException {
  		String qPath = "/telephony/{billingAccount}/voicemail/{serviceName}/migrateOnNewVersion";
  		StringBuilder sb = path(qPath, billingAccount, serviceName);
  		exec(qPath, "POST", sb.toString(), null);
  	}
docs: Change the voicemail on a new version to manager greetings, directories and extra settings.
  
  REST: POST /telephony/{billingAccount}/voicemail/{serviceName}/migrateOnNewVersion
  @param billingAccount [required] The name of your billingAccount
  @param serviceName [required]