@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Child child = (Child) o;
if (id != null ? !id.equals(child.id) : child.id != null) return false;
if (name != null ? !name.equals(child.name) : child.name != null) return false;
return true;
}
@Override
public int hashCode() {
int result = id != null ? id.hashCode() : 0;
result = 31 * result + (name != null ? name.hashCode() : 0);
return result;
}