code: func NewFileChecksumGenerator(blocksize uint) *FileChecksumGenerator {
  	return &FileChecksumGenerator{
  		BlockSize:       blocksize,
  		WeakRollingHash: rollsum.NewRollsum32Base(blocksize),
  		//WeakRollingHash:  rollsum.NewRollsum16Base(blocksize),
  		StrongHash:       DefaultStrongHashGenerator(),
  		FileChecksumHash: DefaultFileHashGenerator(),
  	}
  }
docs: // Uses all default hashes (MD5 & rollsum16)