@Override
    public boolean equals(Object o) {
        if (o == this) return true;
        if ( ! (o instanceof FunctionReference)) return false;
        FunctionReference other = (FunctionReference)o;
        if ( ! Objects.equals(this.name, other.name)) return false;
        if ( ! Objects.equals(this.instance, other.instance)) return false;
        return true;
    }
Returns the name of the function referenced
model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionReference.java