private final Comparator<T> comparator;

  /**
   * The type of ordering that this object specifies.
   *
   * <ul>
   *   <li>UNORDERED: no order is guaranteed.
   *   <li>STABLE: ordering is guaranteed to follow a pattern that won't change between releases.
   *       Some methods may have stronger guarantees.
   *   <li>INSERTION: insertion ordering is guaranteed.
   *   <li>SORTED: ordering according to a supplied comparator is guaranteed.

constraints.NotNull.message     = {item} darf nicht leer sein.
constraints.Null.message        = {item} muss leer sein.
constraints.Past.message        = {item} muss in der Vergangenheit liegen.
constraints.Pattern.message     = {item} muss dem regulären Ausdruck "{regexp}" entsprechen.
constraints.Size.message        = Die Größe von {item} muss zwischen {min} und {max} liegen.

# ----------------------------------------------------------

constraints.NotNull.message     = {item} may not be null.
constraints.Null.message        = {item} must be null.
constraints.Past.message        = {item} must be in the past.
constraints.Pattern.message     = {item} must match "{regexp}".
constraints.Size.message        = Size of {item} must be between {min} and {max}.

# ----------------------------------------------------------

   *
   * Though any call may be initiated as a duplex call, only web servers that are specially
   * designed for this nonstandard interaction will use it. As of 2019-01, the only widely-used
   * implementation of this pattern is [gRPC][grpc].
   *
   * Because the encoding of interleaved data is not well-defined for HTTP/1, duplex request
   * bodies may only be used with HTTP/2. Calls to HTTP/1 servers will fail before the HTTP request

type CoreDNS struct {
	domainNames []string
	domainIPs   set.StringSet
	domainPort  string
	prefixPath  string
	etcdClient  *clientv3.Client
}

// EtcdOption - functional options pattern style
type EtcdOption func(*CoreDNS)

// DomainNames set a list of domain names used by this CoreDNS
// client setting, note this will fail if set to empty when
// constructor initializes.

     * @return an iterator over the child resources
     * @throws CIFSException
     */
    CloseableIterator<SmbResource> children () throws CIFSException;


    /**
     * Fetch children matching pattern, server-side filtering
     * 
     * <p>
     * The wildcard expression may consist of two special meta
     * characters in addition to the normal filename characters. The '*'

 * should override one or more methods to modify the behavior of the backing multiset as desired per
 * the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingSortedMultiset} forward
 * <b>indiscriminately</b> to the methods of the delegate. For example, overriding {@link

  optional PodFailurePolicyOnExitCodesRequirement onExitCodes = 2;

  // Represents the requirement on the pod conditions. The requirement is represented
  // as a list of pod condition patterns. The requirement is satisfied if at
  // least one pattern matches an actual pod condition. At most 20 elements are allowed.
  // +listType=atomic
  repeated PodFailurePolicyOnPodConditionsPattern onPodConditions = 3;
}

 * methods to modify the behavior of the backing map as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMap} forward <i>indiscriminately</i> to the
 * methods of the delegate. For example, overriding {@link #put} alone <i>will not</i> change the

  }

  private static void assertFailsToDecode(
      BaseEncoding encoding, String cannotDecode, @Nullable String expectedMessage) {
    // We use this somewhat weird pattern with an enum for each assertion we want to make as a way
    // of dealing with the fact that one of the assertions is @GwtIncompatible but we don't want to