checkNotNull(from);
    checkNotNull(to);
    char[] buf = new char[DEFAULT_BUF_SIZE];
    int nRead;
    long total = 0;
    while ((nRead = from.read(buf)) != -1) {
      to.append(buf, 0, nRead);
      total += nRead;
    }
    return total;
  }

  /**
   * Copies all characters between the {@link Reader} and {@link Writer} objects. Does not close or

	i := 0 // current type being scanned is s[i:j].
	nparen := 0
	for j := 0; j < len(s); j++ {
		switch s[j] {
		case ' ':
			if i == j {
				i++
			}
		case '(':
			nparen++
		case ')':
			nparen--
			if nparen < 0 {
				// probably can't happen
				return nil
			}
		case ',':
			if nparen == 0 {
				if i < j {
					out = append(out, s[i:j])
				}
				i = j + 1
			}
		}

				err = runeError(r)
			}
			continue
		case mapped, deviation:
			b = append(b, s[k:start]...)
			b = info(v).appendMapping(b, s[start:i])
		case ignored:
			b = append(b, s[k:start]...)
			// drop the rune
		case unknown:
			b = append(b, s[k:start]...)
			b = append(b, "\ufffd"...)
		}
		k = i
	}
	if k == 0 {
		// No changes so far.

			continue
		case mapped, deviation:
			b = append(b, s[k:start]...)
			b = info(v).appendMapping(b, s[start:i])
		case ignored:
			b = append(b, s[k:start]...)
			// drop the rune
		case unknown:
			b = append(b, s[k:start]...)
			b = append(b, "\ufffd"...)
		}
		k = i
	}
	if k == 0 {
		// No changes so far.
		s = norm.NFC.String(s)
	} else {
		b = append(b, s[k:]...)

	errors := []error{}

	if s.LivezGracePeriod < 0 {
		errors = append(errors, fmt.Errorf("--livez-grace-period can not be a negative value"))
	}

	if s.MaxRequestsInFlight < 0 {
		errors = append(errors, fmt.Errorf("--max-requests-inflight can not be negative value"))
	}
	if s.MaxMutatingRequestsInFlight < 0 {
		errors = append(errors, fmt.Errorf("--max-mutating-requests-inflight can not be negative value"))
	}

			healing++
			if inclHealing {
				healingDisks = append(healingDisks, disks[i])
				healingInfos = append(healingInfos, infos[i])
			}
			continue
		}

		if !info.Scanning {
			newDisks = append(newDisks, disks[i])
			newInfos = append(newInfos, infos[i])
		} else {
			scanningDisks = append(scanningDisks, disks[i])
			scanningInfos = append(scanningInfos, infos[i])
		}
	}

	// Figure out largest value of total_drives_in_erasure_set which results
	// in least number of total_drives/total_drives_erasure_set ratio.
	prevD := divisibleSize / setCounts[0]
	for _, cnt := range setCounts {
		if divisibleSize%cnt == 0 {
			d := divisibleSize / cnt
			if d <= prevD {
				prevD = d
				setSize = cnt
			}
		}
	}
	return setSize
}

// possibleSetCountsWithSymmetry returns symmetrical setCounts based on the

	Pos
	tr    *Tree
	Nodes []Node // The element nodes in lexical order.
}

func (t *Tree) newList(pos Pos) *ListNode {
	return &ListNode{tr: t, NodeType: NodeList, Pos: pos}
}

func (l *ListNode) append(n Node) {
	l.Nodes = append(l.Nodes, n)
}

func (l *ListNode) tree() *Tree {
	return l.tr
}

func (l *ListNode) String() string {
	var sb strings.Builder
	l.writeTo(&sb)
	return sb.String()
}

			registeredPlugins := append([]tf.RegisterPluginFunc{
				tf.RegisterQueueSortPlugin(queuesort.Name, queuesort.New)},
				tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
			)
			var objs []runtime.Object
			for _, p := range append(tt.testPods, tt.initPods...) {
				objs = append(objs, p)
			}
			for _, n := range tt.nodes {
				objs = append(objs, n)
			}

			pod := v1.Pod{}
			pod.UID = types.UID(p)
			for c := range tc.assignments[p] {
				container := v1.Container{}
				container.Name = c
				pod.Spec.Containers = append(pod.Spec.Containers, container)
			}
			activePods = append(activePods, &pod)
		}

		m := manager{
			policy: &staticPolicy{
				topology: topology,
			},
			state: &mockState{
				assignments:   tc.assignments,