in services/quotes/src/main/java/com/example/quotes/domain/Quote.java [94:100]
public int hashCode() {
int result = id != null ? id.hashCode() : 0;
result = 31 * result + (quote != null ? quote.hashCode() : 0);
result = 31 * result + (author != null ? author.hashCode() : 0);
result = 31 * result + (book != null ? book.hashCode() : 0);
return result;
}