*
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw
   *       UnsupportedOperationException when those mutators are called.
   * </ol>
   *
   * @param collection the presumed-immutable collection

   *
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw
   *       UnsupportedOperationException when those mutators are called.
   * </ol>
   *
   * @param collection the presumed-immutable collection

      <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario) {
        List<T> newList = Lists.newArrayList(scenario.strictlyOrderedList);
        Collections.reverse(newList);
        return new Scenario<T>(scenario.ordering.reverse(), newList, scenario.emptyArray);
      }
    },
    NULLS_FIRST {
      @Override
      <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario) {

      <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario) {
        List<T> newList = Lists.newArrayList(scenario.strictlyOrderedList);
        Collections.reverse(newList);
        return new Scenario<T>(scenario.ordering.reverse(), newList, scenario.emptyArray);
      }
    },
    NULLS_FIRST {
      @Override
      <T extends @Nullable Object> Scenario<?> mutate(Scenario<T> scenario) {

/**
 * Listener for connection events. Extend this class to monitor the new connections and closes.
 *
 * All event methods must execute fast, without external locking, cannot throw exceptions,
 * attempt to mutate the event parameters, or be reentrant back into the client.
 * Any IO - writing to files or network should be done asynchronously.
 */
@ExperimentalOkHttpApi
abstract class ConnectionListener {
  /**

				if ver.header.Type == invalidVersionType {
					t.Errorf("Invalid result returned: %v", ver.header)
				}
			}
		})
		t.Run(fmt.Sprintf("signature-q%d", i), func(t *testing.T) {
			// Mutate signature, non strict
			vMod := make([][]xlMetaV2ShallowVersion, 0, len(vers))
			for i, ver := range vers {
				newVers := make([]xlMetaV2ShallowVersion, 0, len(ver))
				for _, v := range ver {

		SetCount:  -1, // explicitly set an invalid value -1, for bucket heal scenario
	}

	// mutate only if not a dry-run
	if opts.DryRun {
		return res, nil
	}

	for i := range beforeState {
		res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
			UUID:     "",
			Endpoint: localDrives[i].String(),
			State:    beforeState[i],
		})
	}

			t.Errorf("%d. got error = %v; want %v", i, err, tt.wanterr)
		}
	}
}

func TestReaderAtConcurrent(t *testing.T) {
	// Test for the race detector, to verify ReadAt doesn't mutate
	// any state.
	r := NewReader([]byte("0123456789"))
	var wg sync.WaitGroup
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(i int) {
			defer wg.Done()
			var buf [1]byte
			r.ReadAt(buf[:], int64(i))

    this.executorServiceOrNull = executorService
  }

  internal fun enqueue(call: AsyncCall) {
    this.withLock {
      readyAsyncCalls.add(call)

      // Mutate the AsyncCall so that it shares the AtomicInteger of an existing running call to
      // the same host.
      if (!call.call.forWebSocket) {
        val existingCall = findExistingCallWithHost(call.host)

}

// A Header represents a single header in a tar archive.
// Some fields may not be populated.
//
// For forward compatibility, users that retrieve a Header from Reader.Next,
// mutate it in some ways, and then pass it back to Writer.WriteHeader
// should do so by creating a new Header and copying the fields
// that they are interested in preserving.
type Header struct {