}Chaining multiple fallible operations is where ? shines. Each ? is an early-return point:
As part of the OpenId Connect (OIDC) protocol, the first of these endpoints enables an API to discover where the other relevant endpoints are and the second endpoint publishes the public keys that clients use to verify the RSA-256 signatures on the JWT's that we issue.
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let err = js_sys::Error::new(&wasm.to_string()); // Error message