private function getChildProvidersOf($parentProvider, $relationships = null)
    {
        if (null === $relationships) {
            $relationships = $this->getEnvironment()->getDataDefinition()->getModelRelationshipDefinition();
        }

        $mySubTables = [];
        foreach ($relationships->getChildConditions($parentProvider) as $condition) {
            $mySubTables[] = $condition->getDestinationName();
        }

        return $mySubTables;
    }