type io.Closer

14 uses

	io (current package)
		io.go#L104: type Closer interface {
		io.go#L134: 	Closer
		io.go#L140: 	Closer
		io.go#L147: 	Closer
		io.go#L161: 	Closer

	crypto/cipher
		io.go#L49: 	if c, ok := w.W.(io.Closer); ok {

	mime/multipart
		formdata.go#L171: 	io.Closer

	net/http
		fs.go#L103: 	io.Closer
		h2_bundle.go#L7811: func (cs *http2clientStream) writeRequestBody(body io.Reader, bodyCloser io.Closer) (err error) {
		response.go#L282: 				io.Closer
		transfer.go#L61: 	BodyCloser       io.Closer

	os/exec
		exec.go#L140: 	closeAfterStart []io.Closer
		exec.go#L141: 	closeAfterWait  []io.Closer
		exec.go#L318: func (c *Cmd) closeDescriptors(closers []io.Closer) {