addrbook.go
func (a *AddrBook) Save() {
	log.Info("Saving AddrBook to file", "size", a.Size())
	a.saveToFile(a.filePath)
}
func (a *AddrBook) Save() {
	log.Info("Saving AddrBook to file", "size", a.Size())
	a.saveToFile(a.filePath)
}
func ( a * AddrBook ) Save ( ) { log . Info ( " " , " " , a . Size ( ) ) a . saveToFile ( a . filePath ) }
// Save saves the book.
Save saves the book .