find model with join and access to getter method

Dear All,

I have a requirement where I want to find records with join from multiple tables and then I want to access property value via getter method

public function initialize() {
    $this->belongsTo('state_id', 'States', 'state_id', array('alias' => 'States',
        "foreignKey" => array("allowNulls" => FALSE, "message" => "{~Invalid %s|State~}"))
    );
}

public function getStateName() {
    //////// some customized logic
    return strtoupper($this->statename." blah blah....");
}

$stations = Stations::query()
            ->columns(['States.state_name', 'station_name'])
            ->join('States')
            ->execute();
    echo $stations[1]->state_name;
    die;

so if State name is "Moscow" in database,then above code must print "MOSCOW blah blah...."

Note : Because I do not want to execute queries multiple times through chaining method (for statename) as I have to extract heavy data.