public with sharing class Cenas implements CalloutActionInterface {
private String theBody;
private String theEndpoint;
private Map<String,String> theHeaders;
private String theCertificate;
public String theAplicationId;
public Cenas(Tenas.Menas sessionDetails) {
    Integration IntegrationS = Utils.getIntegrationSsMap().get('Start_Session_Mobile');
    theEndpoint = IntegrationS.Endpoint__c;
    theAplicationId=Utils.getApplicationId();
    CenasRequest requestBody = (CenasRequest) JSON.deserialize(IntegrationS.Body__c, CenasRequest.class);
    requestBody.Id = theAplicationId;
    requestBody.RemoteIPAddress = sessionDetails.RemoteIPAdress;
    requestBody.OSName = sessionDetails.OSName;
    requestBody.OSVersion = sessionDetails.OSVersion;
    theBody = JSON.serialize(requestBody);
    theCertificate = IntegrationS.Certificate_Name__c;
    theHeaders = Web.getGeneralHeaders('');
}
public Object doAction(){
    WebW.RequestParams Request = new WebW.RequestParams()
            .setEndpoint (theEndpoint)
            .addHeaders(theHeaders)
            .setBodyRequest(theBody)
            .setCertificateName(theCertificate)
            .setMethod(WebW.METHOD.POST);
    Web.StartSession deserializedResponse = (Web.StartSession) JSON.deserialize(WebW.doTheCallFor(ocktoRequest), Web.StartSession.class);
    System.debug(LoggingLevel.FINEST, deserializedResponse);
    if (deserializedResponse.HasError == 'True' || deserializedResponse.Result == '') throw new Web.WebException('Start session token not received');
    return deserializedResponse.Result==null?'Dummy':deserializedResponse.Result;
}

private class CenasRequest {
    public String Id;
    public String Provider;
    public String Type;
    public String CdmVersion;
    public String Mobile2Mobile;
    public String RemoteIPAddress;
    public String OSName;
    public String OSVersion;
    public String ConsentCode;
}