How to use the fabric-ca-client/lib/FabricCAServices.setConfigSetting function in fabric-ca-client

t.fail('Calling non-routable endpoint failed with unexpected error: ' + e.toString());
		}
	}

	// create a mock server, the mock server wait for 10 seconds until send response
	const mockServer = http.createServer((req, res) => {
		setTimeout(() => {
			res.writeHead(200, {'Content-Type': 'text/plain'});
			res.write('Response');
			res.end();
		}, 10000);
	});
	mockServer.listen(3000);

	// set SO_TIMEOUT to 5000
	FabricCAServices.setConfigSetting('socket-operation-timeout', 5000);

	// test SO_TIMEOUT
	try {
		const caClient = new FabricCAServices('http://localhost:3000')._fabricCAClient;
		start = Date.now();
		await caClient.request('GET', '/aMethod', signingIdentity);
		t.fail('Should throw error by SO_TIMEOUT');
	} catch (e) {
		end = Date.now();
		t.equal(Math.floor((end - start) / 1000), 5, 'should have duration roughly equals 5000');
		if (e.message.includes('endpoint failed')) {
			t.pass('Successfully throw error after SO_TIMEOUT');
		} else {
			t.fail('did not throw error after SO_TIMEOUT');
		}
		mockServer.close();

function getFabricCAService() {
	FabricCAServices.addConfigFile(path.join(__dirname, 'e2e', 'config.json'));
	ORGS = FabricCAServices.getConfigSetting('test-network');
	fabricCAEndpoint = ORGS[userOrg].ca.url;

	FabricCAServices.getConfigSetting('crypto-keysize', '256');// force for npm test
	FabricCAServices.setConfigSetting('crypto-hash-algo', 'SHA2');// force for npm test

	return new FabricCAServices(fabricCAEndpoint, tlsOptions, ORGS[userOrg].ca.name);
}