private function thenTheOwningFieldMappingShouldMapTheReferencedRecord()
 {
     $relation = $this->recordCollectionRecord->getTableRelation('Author');
     /** @var ReferenceMap $referenceMap */
     $referenceMap = self::readAttribute($relation, 'map');
     $owningOid = $this->recordCollectionRecord->getOid();
     $this->assertTrue($referenceMap->hasFieldMapping($owningOid));
     $this->assertEquals($this->author->getOid(), $referenceMap->getFieldMapping($owningOid));
 }