Deployer\Cluster\ClusterBuilder::identityFile PHP Method

    public function identityFile($publicKeyFile = '~/.ssh/id_rsa.pub', $privateKeyFile = '~/.ssh/id_rsa', $passPhrase = '')
    {
        foreach ($this->nodes as $node) {
            $node->builder->identityFile($publicKeyFile, $privateKeyFile, $passPhrase);
        }
        return $this;
    }