kubernetes/staging/src/k8s.io/apimachinery/pkg/runtime/types_proto.go

type ProtobufMarshaller …

type ProtobufReverseMarshaller …

// NestedMarshalTo allows a caller to avoid extra allocations during serialization of an Unknown
// that will contain an object that implements ProtobufMarshaller or ProtobufReverseMarshaller.
func (m *Unknown) NestedMarshalTo(data []byte, b ProtobufMarshaller, size uint64) (int, error) { … }