src/Mapping.php
public function getModelName(string $key): string
    {
        $this->checkMappingExistence($key, true);

        /** @var ClassMetadata */
        $classMetadata = $this->getClassMetadataByKey($key);

        return $classMetadata->getModelName();
    }
public function getModelName(string $key): string
    {
        $this->checkMappingExistence($key, true);

        /** @var ClassMetadata */
        $classMetadata = $this->getClassMetadataByKey($key);

        return $classMetadata->getModelName();
    }
return a model class name for a given key