tree

type Adapter[T any] struct {
	// GetID returns the unique identifier of a node. Nodes with an empty ID are ignored.
	GetID func(T) string
	// GetParentID returns the identifier of a node's parent, or nil if the node is a root.
	GetParentID func(T) *string
	// GetChildren returns the children already attached to a node.
	GetChildren func(T) []T
	// SetChildren assigns the children of a node in place via the given pointer.
	SetChildren func(*T, []T)
}