import java.time.Duration;
import java.util.concurrent.TimeUnit;

/**
 * An object that accurately measures <i>elapsed time</i>: the measured duration between two
 * successive readings of "now" in the same process.
 *
 * <p>In contrast, <i>wall time</i> is a reading of "now" as given by a method like
 * {@link System#currentTimeMillis()}, best represented as an {@link java.time.Instant}. Such values

    assertThat(UnsignedLongs.compare(0x5a4316b8c153ac4dL, 0x6cf78a4b139a4e2aL)).isLessThan(0);
    assertThat(UnsignedLongs.compare(0x6cf78a4b139a4e2aL, 0x5a4316b8c153ac4dL)).isGreaterThan(0);

    // same value
    assertThat(UnsignedLongs.compare(0xff1a618b7f65ea12L, 0xff1a618b7f65ea12L)).isEqualTo(0);
  }

  public void testMax_noArgs() {
    assertThrows(IllegalArgumentException.class, () -> max());
  }

 *
 * <p>Implementations of this interface are expected to be thread-safe, and can be safely accessed
 * by multiple concurrent threads.
 *
 * <p>When evaluated as a {@link Function}, a cache yields the same result as invoking {@link
 * #getUnchecked}.
 *
 * @param <K> the type of the cache's keys, which are not permitted to be null
 * @param <V> the type of the cache's values, which are not permitted to be null

	// unicode.IsSpace() internally here) to one space and return
	return strings.Join(strings.Fields(input), " ")
}

// checkMetaHeaders will check if the metadata from header/url is the same with the one from signed headers
func checkMetaHeaders(signedHeadersMap http.Header, r *http.Request) APIErrorCode {
	// check values from http header
	for k, val := range r.Header {

		// Create a request to use.
		req, e := http.NewRequest(http.MethodGet, "http://host/a/b?"+query.Encode(), nil)
		if e != nil {
			t.Errorf("(%d) failed to create http.Request, got %v", i, e)
		}

		// Do the same for the headers.
		for key, value := range testCase.headers {
			req.Header.Set(key, value)
		}

		// parse form.
		req.ParseForm()

		// Check if it matches!

## Handlers & Routes

Handlers have a predefined Handler ID.
In addition, there can be several *static* subroutes used to differentiate between different handlers of the same ID.
A subroute on a client must match a subroute on the server. So routes cannot be used for dynamic routing, unlike HTTP.

            // Given
            long capacity = 1000L;
            long free = 500L;
            TestAllocInfo allocInfo = new TestAllocInfo(capacity, free);

            // When - multiple calls should return same values
            long firstCapacityCall = allocInfo.getCapacity();
            long secondCapacityCall = allocInfo.getCapacity();
            long firstFreeCall = allocInfo.getFree();

        // Given
        smbComTreeDisconnect = new SmbComTreeDisconnect(config);
        byte[] buffer = new byte[100];

        // When & Then - multiple calls should return the same result
        for (int i = 0; i < 10; i++) {
            assertEquals(0, smbComTreeDisconnect.writeParameterWordsWireFormat(buffer, i));
            assertEquals(0, smbComTreeDisconnect.writeBytesWireFormat(buffer, i));

			ObjectName:      object,
		}) {
			// Request is allowed return the appropriate access key.
			return ErrNone
		}

		if action == policy.ListBucketVersionsAction {
			// In AWS S3 s3:ListBucket permission is same as s3:ListBucketVersions permission
			// verify as a fallback.
			if globalPolicySys.IsAllowed(policy.BucketPolicyArgs{
				AccountName:     cred.AccessKey,
				Groups:          cred.Groups,

   * the segment.
   */
  final transient int segmentMask;

  /**
   * Shift value for indexing within segments. Helps prevent entries that end up in the same segment
   * from also ending up in the same bucket.
   */
  final transient int segmentShift;

  /** The segments, each of which is a specialized hash table. */
  final transient Segment<K, V, E, S>[] segments;