globalEventNotifier = NewEventNotifier(GlobalContext)

	// Create new bucket metadata system.
	if globalBucketMetadataSys == nil {
		globalBucketMetadataSys = NewBucketMetadataSys()
	} else {
		// Reinitialize safely when testing.
		globalBucketMetadataSys.Reset()
	}

	// Create the bucket bandwidth monitor
	globalBucketMonitor = bandwidth.NewMonitor(ctx, uint64(totalNodeCount()))

	// Create a new config system.

   * stream whose elements are non-null. However, the method goes out of its way to still handle
   * nulls in the stream. This means that the method can safely be used with a stream that contains
   * nulls as long as the *last* element is *not* null.
   *
   * (To "go out of its way," the method tracks a `set` bit so that it can distinguish "the final

       * entries, but this is safe; if this Builder is used further, it will grow the entries array
       * (so it can't affect the original array), and future build() calls will always copy any
       * entry objects that cannot be safely reused.
       */
      switch (size) {
        case 0:
          return of();
        case 1:
          // requireNonNull is safe because the first `size` elements have been filled in.

       * directly and writing over the entry objects with non-terminal entries, but this is
       * safe; if this Builder is used further, it will grow the entries array (so it can't
       * affect the original array), and future build() calls will always copy any entry
       * objects that cannot be safely reused.
       */
      // localAlternatingKeysAndValues is an alias for the alternatingKeysAndValues field, except if

      //      delete the working dir with a relative path anyway, so it's ok to fail.
      //   C) if we're getting it for opening a new SecureDirectoryStream, there's no need to get
      //      the parent path anyway since we can safely open a DirectoryStream to the path without
      //      worrying about a symlink.
      return null;
    } else {
      // "foo" (working dir)
      return path.getFileSystem().getPath(".");
    }
  }

      //      delete the working dir with a relative path anyway, so it's ok to fail.
      //   C) if we're getting it for opening a new SecureDirectoryStream, there's no need to get
      //      the parent path anyway since we can safely open a DirectoryStream to the path without
      //      worrying about a symlink.
      return null;
    } else {
      // "foo" (working dir)
      return path.getFileSystem().getPath(".");
    }
  }

	// Wait for all renames to finish.
	errs := g.Wait()

	err := reduceWriteQuorumErrs(ctx, errs, objectOpIgnoredErrs, writeQuorum)
	if err != nil {
		er.cleanupMultipartPath(ctx, paths...)
	}

	// We can safely allow RenameFile errors up to len(er.getDisks()) - writeQuorum
	// otherwise return failure. Cleanup successful renames.
	return evalDisks(disks, errs), err
}

   *
   * <p>As long as there are applications that assume that all IP addresses are IPv4 addresses and
   * can therefore be converted safely to integers (for whatever purpose) this function can be used
   * to handle IPv6 addresses as well until the application is suitably fixed.
   *

  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //
  // Future versions of the JMM may revise safe construction semantics in such a way that we can
  // safely publish these objects and we won't need this whole discussion.
  // TODO(user,lukes): consider adding volatile to all these fields since in current known JVMs

      return fromMap.containsKey(key);
    }

    // safe as long as the user followed the <b>Warning</b> in the javadoc
    @SuppressWarnings("unchecked")
    @Override
    @CheckForNull
    public V2 get(@CheckForNull Object key) {
      V1 value = fromMap.get(key);
      if (value != null || fromMap.containsKey(key)) {
        // The cast is safe because of the containsKey check.