if err := buf.UnreadByte(); err != nil {
		// should not happen
		t.Fatal(err)
	}
	if err := buf.UnreadByte(); err == nil {
		t.Fatal("UnreadByte: expected error, got nil")
	}
}

// verify that copying from an empty reader always has the same results,
// regardless of the presence of a WriteTo method.
func TestReaderCopyNothing(t *testing.T) {
	type nErr struct {
		n   int64
		err error
	}

import org.codelibs.core.net.URLUtil;
import org.codelibs.core.nio.ChannelUtil;

/**
 * Utility for copying.
 * <p>
 * The combinations of input and output types and the unit of elements copied are as follows:
 * </p>
 * <table border="1">
 * <caption>Elements for copying instances</caption>
 * <tr>
 * <th rowspan="2">Input type</th>
 * <th colspan="4">Output type</th>
 * </tr>
 * <tr>

    }

    if (mostRecentTrimFailed || mostRecentRebuildFailed) {
      // The OS has become our enemy! If the trim job failed, it means we are storing more data than
      // requested by the user. Do not allow edits so we do not go over that limit any further. If
      // the journal rebuild failed, the journal writer will not be active, meaning we will not be

    // user-specified -XX:+DisableExplicitGC.
    //
    // TODO(user): Consider using
    // java/lang/management/OperatingSystemMXBean.html#getSystemLoadAverage()
    //
    // TODO(user): Consider scaling by number of mutator threads,
    // e.g. using Thread#activeCount()
    return max(10L, Runtime.getRuntime().totalMemory() / (32L * 1024L * 1024L));
  }

  /**

	// Make a copy of the supplied metadata to avoid
	// to change the original one.
	defaultMeta := make(map[string]string, len(userMeta))
	for k, v := range userMeta {
		// skip tier metadata when copying metadata from source object
		switch k {
		case metaTierName, metaTierStatus, metaTierObjName, metaTierVersionID:
			continue
		}
		defaultMeta[k] = v
	}

	// remove SSE Headers from source info

     * the potentially relative {@link #targetPath()} into an absolute filesystem path. This is the
     * method that Maven 4 API consumers should use when they need to know the actual destination
     * directory for copying files.
     * </p>
     * <p>
     * <strong>Resolution Algorithm:</strong>
     * </p>
     * <ol>

   * bufferSize ≥ k, then we can ignore any elements greater than this value.
   */
  private @Nullable T threshold;

  @SuppressWarnings("unchecked") // TODO(cpovirk): Consider storing Object[] instead of T[].
  private TopKSelector(Comparator<? super T> comparator, int k) {
    this.comparator = checkNotNull(comparator, "comparator");
    this.k = k;
    checkArgument(k >= 0, "k (%s) must be >= 0", k);

t:"\f20b"}.fa-shield-alt:before{content:"\f3ed"}.fa-ship:before{content:"\f21a"}.fa-shipping-fast:before{content:"\f48b"}.fa-shirtsinbulk:before{content:"\f214"}.fa-shoe-prints:before{content:"\f54b"}.fa-shopping-bag:before{content:"\f290"}.fa-shopping-basket:before{content:"\f291"}.fa-shopping-cart:before{content:"\f07a"}.fa-shopware:before{content:"\f5b5"}.fa-shower:before{content:"\f2cc"}.fa-shuttle-van:before{content:"\f5b6"}.fa-sign:before{content:"\f4d9"}.fa-sign-in-alt:before{content:"\f2...

    /** Legacy configuration key for Azure AD default roles. */
    protected static final String AAD_DEFAULT_ROLES = "aad.default.roles";

    /** Session attribute key for storing Entra ID states. */
    protected static final String STATES = "entraidStates";

    /** OAuth2 state parameter name. */
    protected static final String STATE = "state";

    /** OAuth2 error parameter name. */

   * {@link Builder} and call {@link Builder#orderRowsBy}, {@link Builder#orderColumnsBy}, and
   * {@link Builder#putAll}
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   */
  public static <R, C, V> ImmutableTable<R, C, V> copyOf(