One of the main features needed by API systems is data "<abbr title="also called marshalling, conversion">serialization</abbr>" which is taking data from the code (Python) and converting it into something that can be sent through the network. For example, converting an object containing data from a database into a JSON object. Converting `datetime` objects into strings, etc.

  /**
   * Returns an unmodifiable view of the specified navigable set. This method allows modules to
   * provide users with "read-only" access to internal navigable sets. Query operations on the
   * returned set "read through" to the specified set, and attempts to modify the returned set,
   * whether direct or via its collection views, result in an {@code UnsupportedOperationException}.
   *

		}
		wg.Add(1)
		go func(tgt *TargetClient) {
			defer wg.Done()

			var tgtInfo replicatedTargetInfo
			if ri.OpType == replication.ObjectReplicationType {
				// all incoming calls go through optimized path.
				tgtInfo = ri.replicateObject(ctx, objectAPI, tgt)
			} else {
				tgtInfo = ri.replicateAll(ctx, objectAPI, tgt)
			}

			mu.Lock()
			rinfos.Targets = append(rinfos.Targets, tgtInfo)

			err:    nil,
		},
		// TestXLStorage case - 6.
		// TestXLStorage case with invalid volume name.
		{
			volume: "ab",
			path:   "as-file",
			err:    errVolumeNotFound,
		},
	}

	// Run through all the test cases and validate for ReadVersion.
	for i, testCase := range testCases {
		_, err = xlStorage.ReadVersion(t.Context(), "", testCase.volume, testCase.path, "", ReadOptions{})
		if err != testCase.err {

    List<Integer> first = iterator.next();

    // Changes after are too (unlike Iterables.partition)
    list.set(2, 5);

    assertEquals(asList(3, 4, 5), first);

    // Changes to a sublist also write through to the original list
    first.set(1, 6);
    assertEquals(asList(3, 6, 5), list);
  }

  public void testPartitionSize_1() {
    List<Integer> list = asList(1, 2, 3);

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all

      // extensive testing
      try {
        return Double.parseDouble(string);
      } catch (NumberFormatException e) {
        // Double.parseDouble has changed specs several times, so fall through
        // gracefully
      }
    }
    return null;
  }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Implementation of a transforming random access list. We try to make as many of these methods
   * pass-through to the source list as possible so that the performance characteristics of the
   * source list and transformed list are similar.
   *
   * @see Lists#transform
   */

        } catch (Throwable t) {
          // Any Exception is either a RuntimeException or sneaky checked exception.

          /*
           * We fail this `ListenableFuture`, whose result is exposed to the user through the
           * `ListenableScheduledTask` we return from the `schedule*` methods.
           */
          setException(t);

          /*

	if err != nil {
		t.Fatalf("os.Stat:1 %v", err)
	}
	hdr.Typeflag = TypeDir
	// Force a PAX long name to be written. The name was taken from a practical example
	// that fails and replaced ever char through numbers to anonymize the sample.