Docsp 17220 client specific key trust store (#139)

Co-authored-by: kyuan-mongodb <78768401+kyuan-mongodb@users.noreply.github.com>

Author: biniona-mongodb

source/fundamentals/connection/tls.txt

@@ -74,8 +74,11 @@ Configure Certificates
 Java applications that initiate TLS/SSL requests require access to
 cryptographic certificates that prove identity for the application
 itself as well as other applications with which the application
-interacts. To configure access to these certificates in your application,
-you should use the JVM Trust Store and the JVM Key Store.
+interacts. You can configure access to these certificates in your application with
+the following mechanisms:
+
+- The JVM Trust Store and JVM Key Store
+- A Client-Specific Trust Store and Key Store
 
 .. note::
 
@@ -158,6 +161,19 @@ please refer to the `JSSE Reference Guide
 
 .. _tls-disable-hostname-verification:
 
+Configure a Client-Specific Trust Store and Key Store
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You can configure a client-specific trust store and key store using the
+``init()`` method of the ``SSLContext`` class.
+
+You can find an example showing how to configure a client with an ``SSLContext``
+instance in the 
+:ref:`Customize TLS/SSL Configuration with an SSLContext section of this guide <tls-custom-sslContext>`.
+
+For more information on the ``SSLContext`` class, see the API
+documentation for `SSL Context <https://docs.oracle.com/en/java/javase/16/docs/api/java.base/javax/net/ssl/SSLContext.html>`__. 
+
 Disable Hostname Verification
 -----------------------------