How to send request in Alamofire 4.0 only with parameters and Body using POST method in swift : i am using like this, but in this case i need to call API with parametes and Body. Please help to me... Thanks in advance

Alamofire.request(postUrl, method: .post, parameters: params, encoding: CustomPostEncoding(), headers: nil).validate().responseJSON{ response in
            
            switch response.result
            {
            case .success:
                
                MBProgressHUD.hide(for: self.view, animated: true)
                
                if let val = response.result.value
                {
                    
                    let json = JSON(val)
                    
                    print(json)
                    
                    
                }
                
            case .failure(let error):
                print(error)
                
            }
            
        }