GraphAware\Neo4j\OGM\Metadata\PropertyAnnotationMetadata::getKey PHP Method

    public function getKey()
    {
        return $this->key;
    }

 public function testCustomKeyCanBePassed()
 {
     $metadata = new PropertyAnnotationMetadata('string', 'dob');
     $this->assertEquals('dob', $metadata->getKey());
 }