docs(NODE-3271): add versioned api examples (#2877)

Author: emadum

test/functional/examples/versioned_api.js

@@ -0,0 +1,43 @@
+'use strict';
+const { MongoClient } = require('../../../src');
+
+describe('examples.versionedApi:', function () {
+  let uri;
+  // eslint-disable-next-line no-unused-vars
+  let client;
+  before(function () {
+    uri = this.configuration.url();
+  });
+
+  it('declare an API version on a client', function () {
+    // Start Versioned API Example 1
+
+    client = new MongoClient(uri, { serverApi: { version: '1' } });
+
+    // End Versioned API Example 1
+  });
+
+  it('declare an API version on a client with strict enabled', function () {
+    // Start Versioned API Example 2
+
+    client = new MongoClient(uri, { serverApi: { version: '1', strict: true } });
+
+    // End Versioned API Example 2
+  });
+
+  it('declare an API version on a client with strict disabled', function () {
+    // Start Versioned API Example 3
+
+    client = new MongoClient(uri, { serverApi: { version: '1', strict: false } });
+
+    // End Versioned API Example 3
+  });
+
+  it('declare an API version on a client with deprecation errors enabled', function () {
+    // Start Versioned API Example 4
+
+    client = new MongoClient(uri, { serverApi: { version: '1', deprecationErrors: true } });
+
+    // End Versioned API Example 4
+  });
+});