//method to make callout and get the response
@future(callout=true)
Public static void UpsertLeads(){

    //String variable to store the end point url
    String endPoint= 'https://www.***********.com.au/webservice/UpsideDownService/';

    //String to store the password
    String Password ='**_*_*_*_*_*';

    //String to Store the UserName
    String UserName='******';

    //String to Store the EndDate
    Datetime StartDate = system.now().addHours(-2);

    //String to Store the Startdate
    Datetime EndDate = system.now();

    //String Store the Encrypted password in Md5
    String EncryptedPassword = EncodingUtil.convertToHex(crypto.generateDigest('MD5',Blob.valueOf(Password)));

    // String to store the body of request to sent
    String body = '<request><login>'+UserName+'</login><password>'+EncryptedPassword+'</password><startDate>'+StartDate+'</startDate><endDate>'+EndDate+'</endDate></request>';
    System.debug('Body For Request'+body);
    //Http request variable to send the request
    HttpRequest req = new HttpRequest();

    //setting the endPoint
    req.setEndpoint(endPoint);

    //setting the method
    req.setMethod('POST');

    //setting the body
    req.setBody(body);


    Http http = new Http();

    //http response variable
    HTTPResponse response;


    //get the response
    response = http.send(req);

    System.debug('@$ response ' + response);
    System.debug('@$ response.getBody() ' + response.getBody());
    System.debug('@$ response.getBodyDocument() ' + response.getBodyDocument());

    //to read xml
    dom.Document docx = response.getBodyDocument();

    //Creating object
    LeadParser leadParserObject = new LeadParser();

    List<Lead> newLeads = leadParserObject.parseLead(docx);
    System.debug('@$ newLeads ' + newLeads);
    if(newLeads != null && !newLeads.isEmpty()){
        Database.insert(newLeads,false);
    }
}