type io.SectionReader

9 uses

	io (current package)
		io.go#L486: func NewSectionReader(r ReaderAt, off int64, n int64) *SectionReader {
		io.go#L496: 	return &SectionReader{r, off, off, remaining, n}
		io.go#L501: type SectionReader struct {
		io.go#L509: func (s *SectionReader) Read(p []byte) (n int, err error) {
		io.go#L524: func (s *SectionReader) Seek(offset int64, whence int) (int64, error) {
		io.go#L542: func (s *SectionReader) ReadAt(p []byte, off int64) (n int, err error) {
		io.go#L559: func (s *SectionReader) Size() int64 { return s.limit - s.base }
		io.go#L565: func (s *SectionReader) Outer() (r ReaderAt, off int64, n int64) {

	mime/multipart
		formdata.go#L297: 	*io.SectionReader