Responsible for rejecting or accepting certificates received on https requests.
Note: Custom certificate validation is currently only implemented for the following platforms - Android, iOS, tvOS, Tizen and desktop platforms.
| Dispose | Signals that this [CertificateHandler] is no longer being used, and should clean up any resources it is using. |
| ValidateCertificate | Callback, invoked for each leaf certificate sent by the remote server. |