kubernetes/staging/src/k8s.io/apimachinery/pkg/util/managedfields/internal/capmanagers.go

type capManagersManager …

var _ …

// NewCapManagersManager creates a new wrapped FieldManager which ensures that the number of managers from updates
// does not exceed maxUpdateManagers, by merging some of the oldest entries on each update.
func NewCapManagersManager(fieldManager Manager, maxUpdateManagers int) Manager { … }

// Update implements Manager.
func (f *capManagersManager) Update(liveObj, newObj runtime.Object, managed Managed, manager string) (runtime.Object, Managed, error) { … }

// Apply implements Manager.
func (f *capManagersManager) Apply(liveObj, appliedObj runtime.Object, managed Managed, fieldManager string, force bool) (runtime.Object, Managed, error) { … }

// capUpdateManagers merges a number of the oldest update entries into versioned buckets,
// such that the number of entries from updates does not exceed f.maxUpdateManagers.
func (f *capManagersManager) capUpdateManagers(managed Managed) (newManaged Managed, err error) { … }