You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: decompress.go
    path of file: ./repos/buildkit/vendor/github.com/klauspost/compress/fse
    
    the code of the file until where you have to start completion: package fse

import (
	"errors"
	"fmt"
)

const (
	tablelogAbsoluteMax = 15
)

// Decompress a block of data.
// You can provide a scratch buffer to avoid allocations.
// If nil is provided a temporary one will be allocated.
// It is possible, but by no way 
    
func Decompress(b []byte, s *Scratch) ([]byte, error) {
	s, err := s.prepare(b)
	if err != nil {
		return nil, err
	}
	s.Out = s.Out[:0]
	err = s.readNCount()
	if err != nil {
		return nil, err
	}
	err = s.buildDtable()
	if err != nil {
		return nil, err
	}
	err = s.decompress()
	if err != nil {
		return nil, err
	}

	return s.Out, nil
}