method TLSSocket.prototype.getX509Certificate
Usage in Deno
```typescript import { TLSSocket } from "node:node__tls.d.ts"; ```
TLSSocket.prototype.getX509Certificate(): X509Certificate | undefined
Returns the local certificate as an `X509Certificate` object.
If there is no local certificate, or the socket has been destroyed,`undefined` will be returned.
X509Certificate | undefined