src/Amadeus/Client/Session/Handler/SoapHeader4.php
protected function makeSoapClientOptions()
    {
        $options = $this->soapClientOptions;
        $options['classmap'] = array_merge(Classmap::$soapheader4map, Classmap::$map);

        if (!empty($this->params->soapClientOptions)) {
            $options = array_merge($options, $this->params->soapClientOptions);
        }

        return $options;
    }
protected function makeSoapClientOptions()
    {
        $options = $this->soapClientOptions;
        $options['classmap'] = array_merge(Classmap::$soapheader4map, Classmap::$map);

        if (!empty($this->params->soapClientOptions)) {
            $options = array_merge($options, $this->params->soapClientOptions);
        }

        return $options;
    }
Make SoapClient options for Soap Header 4 handler

@return array