public  string getData(){
    Http p = new Http();
    HttpRequest request = new HttpRequest();
    HttpResponse response = new HttpResponse();
    IntegrationUser__c sf = [SELECT Id, Name, password__c, client_id__c, client_secret__c, endpoint__c, method__c, grant_type__c FROM IntegrationUser__c limit 1];
    request.setMethod(sf.method__c);
    request.setEndpoint(sf.endpoint__c);
    string body = 'grant_type='+sf.grant_type__c;
    body = body+'&client_id='+sf.client_id__c;
    body = body+'&client_secret='+sf.client_secret__c;
    body = body+'&username='+sf.Name;
    body = body+'&password='+sf.password__c;
    request.setBody(body);
    response = p.send(request);
    System.debug(body);
    system.debug(response.getBody());
    result = response.getBody();


    return result;
}