docs: public ClientVpnEndpoint withDnsServers(String... dnsServers) {
          if (this.dnsServers == null) {
              setDnsServers(new com.amazonaws.internal.SdkInternalList<String>(dnsServers.length));
          }
          for (String ele : dnsServers) {
              this.dnsServers.add(ele);
          }
          return this;
      }