src/Amadeus/Client/Struct/Fop/MopDescription.php
private function checkAndCreateMopDetailedData($fopType)
    {
        if (is_null($this->paymentModule->mopDetailedData)) {
            $this->paymentModule->mopDetailedData = new MopDetailedData($fopType);
        }
    }
private function checkAndCreateMopDetailedData($fopType)
    {
        if (is_null($this->paymentModule->mopDetailedData)) {
            $this->paymentModule->mopDetailedData = new MopDetailedData($fopType);
        }
    }
Create MopDetailedData node if needed

@param string $fopType