func github.com/coder/websocket.newMu

7 uses

	github.com/coder/websocket (current package)
		conn.go#L121: 	c.readMu = newMu(c)
		conn.go#L122: 	c.writeFrameMu = newMu(c)
		conn.go#L256: func newMu(c *Conn) *mu {
		netconn.go#L54: 		readMu:  newMu(c),
		netconn.go#L55: 		writeMu: newMu(c),
		write.go#L68: 		mu:      newMu(c),
		write.go#L69: 		writeMu: newMu(c),