I have been working in Joomla 4.2.5 and I need to convert my custom components from Joomla 3 to Joomla 4 compatible. I am trying to call model from my custom component into Joomla user controller file, but I am getting an error and code does not perform execution. I have tried few code but it is not working.
Joomla 3 code for call model from custom component into user controller:
UserController.php
JModelLegacy::addIncludePath(JPATH_SITE . '/components/com_mycomponent/models', 'MycomponentModel');            
$model = JModelLegacy::getInstance('Mycomponent', 'MycomponentModel');  
Here is my model file code in
components/Mycomponent/Models/mymodel.php
class MycomponentModelmycomponent extends JModelLegacy
{
    public function somefunction(){
      }
 }
Below is my attempt to convert above code into Joomla 4:
UserController.php
Use Joomla\CMS\MVC\Model\BaseDatabaseModel;
class UserController extends BaseController
{
  public function login()
  {
     login functions....
     
    BaseDatabaseModel::addIncludePath(JPATH_SITE .'/components/com_mycomponent/models');
    $model = BaseDatabaseModel::getInstance('Mycomponent', 'MycomponentModel');
    $model->myfunction($argument); 
  }
}
components/Mycomponent/Models/mymodel.php
namespace Joomla\Component\mycomponent\Site\Model;
use Joomla\Registry\Registry;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Model\ListModel;
class IbousersModelIbousers extends ListModel 
{
   public function myfunction($argument){
   } 
}
But it is not working, can anyone suggest me what is wrong or how can I call model from another component in Joomla 4?