func (b *MemoryBackend) AddTotalScore(n float64) {
	b.mu.Lock()
	b.totalScore += n
	b.mu.Unlock()
}
// AddTotalScore adds to the total score.
AddTotalScore adds to the total score.
// AddTotalScore adds to the total score .
func (b *MemoryBackend) AddTotalScore(n float64) {
	b.mu.Lock()
	b.totalScore += n
	b.mu.Unlock()
}
func ( b * MemoryBackend ) AddTotalScore ( n float64 ) { b . mu . Lock ( ) b . totalScore += n b . mu . Unlock ( ) }
AddTotalScore adds to the total score.
AddTotalScore adds to the total score .