Symfony\Component\Validator\Mapping\Loader\YamlFileLoader::loadClassesFromYaml PHP Method

    private function loadClassesFromYaml()
    {
        if (null === $this->yamlParser) {
            $this->yamlParser = new YamlParser();
        }
        $this->classes = $this->parseFile($this->file);
        if (isset($this->classes['namespaces'])) {
            foreach ($this->classes['namespaces'] as $alias => $namespace) {
                $this->addNamespaceAlias($alias, $namespace);
            }
            unset($this->classes['namespaces']);
        }
    }