pkg math/big, method (*Int) TrailingZeroBits() uint
pkg math/big, method (*Rat) SetUint64(uint64) *Rat
pkg net/http, const SameSiteNoneMode = 4
pkg net/http, const SameSiteNoneMode SameSite
pkg net/http, const StatusEarlyHints = 103
pkg net/http, const StatusEarlyHints ideal-int
pkg net/http, func NewRequestWithContext(context.Context, string, string, io.Reader) (*Request, error)

pkg os, func OpenFile(string, int, fs.FileMode) (*File, error)
pkg os, func ReadDir(string) ([]fs.DirEntry, error)
pkg os, func ReadFile(string) ([]uint8, error)
pkg os, func SameFile(fs.FileInfo, fs.FileInfo) bool
pkg os, func Stat(string) (fs.FileInfo, error)
pkg os, func WriteFile(string, []uint8, fs.FileMode) error
pkg os, method (*File) Chmod(fs.FileMode) error