Puli\Repository\JsonRepository::insertReference PHP Method

    protected function insertReference($path, $reference)
    {
        if (!isset($this->json[$path])) {
            // Store first entries as simple reference
            $this->json[$path] = $reference;
            return;
        }
        if ($reference === $this->json[$path]) {
            // Reference is already set
            return;
        }
        if (!is_array($this->json[$path])) {
            // Convert existing entries to arrays for follow ups
            $this->json[$path] = array($this->json[$path]);
        }
        if (!in_array($reference, $this->json[$path], true)) {
            // Insert at the beginning of the array
            array_unshift($this->json[$path], $reference);
        }
    }