public function testArgMixin4()
{
$response = ObjectHelper::callMethodSanitizeArguments(new TestObject(), 'm4');
$this->assertEquals(true, is_array($response));
$this->assertEquals(0, count($response));
$response = ObjectHelper::callMethodSanitizeArguments(new TestObject(), 'm4', ['arr' => ['foo' => 'bar']]);
$this->assertEquals(true, is_array($response));
$this->assertEquals(1, count($response));
$this->assertArrayHasKey('foo', $response);
$this->assertEquals('bar', $response['foo']);
}