TestService.php

<?php

namespace Drupal\autowire_test;

use Drupal\Core\Database\Connection;
use Drupal\Core\DrupalKernelInterface;
class TestService {
  
  /**
   * @var \Drupal\autowire_test\TestInjectionInterface
   */
  protected $testInjection;
  
  /**
   * @var \Drupal\autowire_test\TestInjection2
   */
  protected $testInjection2;
  
  /**
   * The database connection.
   */
  protected $database;
  
  /**
   * The Drupal kernel.
   */
  protected $kernel;
  public function __construct(TestInjectionInterface $test_injection, TestInjection2 $test_injection2, Connection $database, DrupalKernelInterface $kernel, protected TestInjectionInterface $testInjection3) {
    $this->testInjection = $test_injection;
    $this->testInjection2 = $test_injection2;
    $this->database = $database;
    $this->kernel = $kernel;
  }
  public function getTestInjection() : TestInjectionInterface {
    return $this->testInjection;
  }
  public function getTestInjection2() : TestInjection2 {
    return $this->testInjection2;
  }
  public function getTestInjection3() : TestInjection3 {
    return $this->testInjection3;
  }
  public function getDatabase() : Connection {
    return $this->database;
  }
  public function getKernel() : DrupalKernelInterface {
    return $this->kernel;
  }

}