@Override
    public int hashCode() {
        return toHashCode();
    }
<p>
The computed <code>hashCode</code> from toHashCode() is returned due to the likelihood
of bugs in mis-calling toHashCode() and the unlikeliness of it mattering what the hashCode for
HashCodeBuilder itself is.</p>

@return <code>hashCode</code> based on the fields appended
@since 2.5
android/android_framework/base/src/main/java/lang3/builder/HashCodeBuilder.java