int expectedSize) {
    return new HashSet<>(Maps.capacity(expectedSize));
  }

  /**
   * Creates a thread-safe set backed by a hash map. The set is backed by a {@link
   * ConcurrentHashMap} instance, and thus carries the same concurrency guarantees.
   *
   * <p>Unlike {@code HashSet}, this class does NOT allow {@code null} to be used as an element. The

   *
   * We still encourage people to use requireNonNull over checkNotNull for non-precondition checks.
   */

  /**
   * Ensures that an object reference passed as a parameter to the calling method is not null.
   *
   * @param reference an object reference
   * @return the non-null reference that was validated
   * @throws NullPointerException if {@code reference} is null

// Sign given request using Signature V4.
func signStreamingRequest(req *http.Request, accessKey, secretKey string, currTime time.Time) (string, error) {
	// Get hashed payload.
	hashedPayload := req.Header.Get("x-amz-content-sha256")
	if hashedPayload == "" {
		return "", fmt.Errorf("Invalid hashed payload")
	}

	// Set x-amz-date.
	req.Header.Set("x-amz-date", currTime.Format(iso8601Format))

	// Get header map.

        assertEquals("PASSED", pom.getValue(prefix + "propertiesFile"));
        assertEquals("PASSED", pom.getValue(prefix + "parent"));
        assertEquals("PASSED-1", pom.getValue(prefix + "stringParams/stringParam[1]"));
        assertEquals("PASSED-3", pom.getValue(prefix + "stringParams/stringParam[2]"));
        assertEquals("PASSED-2", pom.getValue(prefix + "stringParams/stringParam[3]"));

     *
     * <p>Canceling this future will attempt to cancel all the component futures.
     *
     * @return a future whose result is based on {@code combiner} (or based on the input futures
     *     passed to {@code whenAllSucceed}, if that is the method you used to create this {@code
     *     FutureCombiner}). Even if you don't care about the value of the future, you should

//
// Conventions:
// * We use the prefix TF_ for everything in the API.
// * Objects are always passed around as pointers to opaque structs
//   and these structs are allocated/deallocated via the API.
// * TF_Status holds error information.  It is an object type
//   and therefore is passed around as a pointer to an opaque
//   struct as mentioned above.
// * Every call that has a TF_Status* argument clears it on success

    TypeToken<?> token = of(bound);
    if (token.getRawType().isInterface()) {
      return null;
    }
    @SuppressWarnings("unchecked") // only upper bound of T is passed in.
    TypeToken<? super T> superclass = (TypeToken<? super T>) token;
    return superclass;
  }

  /**
   * Returns the generic interfaces that this type directly {@code implements}. This method is

    return CollectCollectors.<T, K, V, M>flatteningToMultimap(
        keyFunction, valueFunction, multimapSupplier);
  }

  /**
   * Creates a new {@code Multimap} backed by {@code map}, whose internal value collections are
   * generated by {@code factory}.
   *
   * <p><b>Warning: do not use</b> this method when the collections returned by {@code factory}

		}
		if actualErr == nil && !testCase.shouldPass {
			t.Errorf("Test %d: %s: Expected to fail with <ERROR> \"%s\", but passed instead.", i+1, instanceType, testCase.expectedError.Error())
		}
		// Failed as expected, but does it fail for the expected reason.
		if actualErr != nil && !testCase.shouldPass {

					continue
				}

				ventry.ObjectV2.MetaSys[k] = []byte(v)
			} else {
				ventry.ObjectV2.MetaUser[k] = v
			}
		}

		// If asked to save data.
		if len(fi.Data) > 0 || fi.Size == 0 {
			x.data.replace(fi.VersionID, fi.Data)
		}

		if fi.TransitionStatus != "" {
			ventry.ObjectV2.MetaSys[metaTierStatus] = []byte(fi.TransitionStatus)