func time.appendNano

3 uses

	time (current package)
		format.go#L512: func appendNano(b []byte, nanosec int, std int) []byte {
		format.go#L832: 			b = appendNano(b, t.Nanosecond(), std)
		format_rfc3339.go#L41: 		b = appendNano(b, t.Nanosecond(), std)