type io.WriterTo

7 uses

	io (current package)
		io.go#L196: type WriterTo interface {
		io.go#L407: 	if wt, ok := src.(WriterTo); ok {

	bufio
		bufio.go#L519: 	if r, ok := b.rd.(io.WriterTo); ok {

	github.com/aws/smithy-go/transport/http/internal/io
		safe.go#L14: 	if _, ok := readCloser.(io.WriterTo); ok {
		safe.go#L37: 	return r.safeReadCloser.readCloser.(io.WriterTo).WriteTo(w)

	net
		net.go#L702: 	_ io.WriterTo = (*Buffers)(nil)

	net/http
		http.go#L114: 	_ io.WriterTo   = NoBody