[ /* * Path to local certificate file on filesystem. It must be a PEM encoded file which * contains your certificate and private key. It can optionally contain the * certificate chain of issuers. The private key also may be contained * in a separate file specified by local_pk. */ 'local_cert' => null, /* * Path to local private key file on filesystem in case of separate files for * certificate (local_cert) and private key. */ 'local_pk' => null, /* * Passphrase with which your local_cert file was encoded. */ 'passphrase' => null ], ];