public function checkMetadata()
{
$this->assertEquals(['string', 'integer', 'array'], $this->converter->getSupportedSourceTypes(), 'Source types do not match');
$this->assertEquals(\DateTimeInterface::class, $this->converter->getSupportedTargetType(), 'Target type does not match');
$this->assertEquals(1, $this->converter->getPriority(), 'Priority does not match');
}