M1\Vars\Loader\JsonLoader::load PHP Method

    public function load()
    {
        $content = json_decode(file_get_contents($this->entity), true);
        if (json_last_error() !== JSON_ERROR_NONE) {
            $message = function_exists('json_last_error_msg') ? json_last_error_msg() : 'Parse error';
            throw new \RuntimeException(sprintf("'%s' failed to load with the error '%s'", $this->entity, $message));
        }
        $this->content = $content;
        return $this;
    }