Can someone explain what the createWeight methods should do? And one someone mind explaining what the hashCode method is doing in this use case?
public int hashCode() {
int h = a.hashCode();
h ^= (h << 13) | (h >>> 20);
h += b.hashCode();
h ^= (h << 23) | (h >>> 10);
h += name().hashCode();
return h;
}
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