public function findFirstEligibleTypeConverterInObjectHierarchyShouldReturnNullIfSourceTypeIsUnknown()
{
$propertyMapper = $this->getAccessibleMock(PropertyMapper::class, ['dummy']);
$this->assertNull($propertyMapper->_call('findFirstEligibleTypeConverterInObjectHierarchy', 'source', 'unknownSourceType', Bootstrap::class));
}