kubernetes/vendor/k8s.io/klog/v2/internal/serialize/keyvalues_slog.go

// KVFormat serializes one key/value pair into the provided buffer.
// A space gets inserted before the pair.
func (f Formatter) KVFormat(b *bytes.Buffer, k, v interface{ … }

// generateJSON has the same preference for plain strings as KVFormat.
// In contrast to KVFormat it always produces valid JSON with no line breaks.
func generateJSON(b *bytes.Buffer, v interface{ … }