jsoap/classes/jSoapCoordinator.class.php
public function processSoap(){
        $this->wsdl = new jWSDL($this->request->params['module'], $this->request->params['action']);

        $this->soapServer = $this->getSoapServer($this->wsdl);
        $this->soapServer->setclass('jSoapHandler', $this);
        $this->soapServer->handle($this->request->soapMsg);
    }
public function processSoap(){
        $this->wsdl = new jWSDL($this->request->params['module'], $this->request->params['action']);

        $this->soapServer = $this->getSoapServer($this->wsdl);
        $this->soapServer->setclass('jSoapHandler', $this);
        $this->soapServer->handle($this->request->soapMsg);
    }
Intercept the soapServer method call in order to handle the call thrue the process method
Return php variables, the soap server will transform it in a soap response