[Snippet rust]
```rust
pub async fn authentication_authenticate_core(
```
Path: hyperswitch/crates/router/src/core/unified_authentication_service.rs :: authentication_authenticate_core (function, crate=router)

Negatives:
- hyperswitch/crates/hyperswitch_connectors/src/connectors/paypal/transformers.rs :: try_from
- hyperswitch/crates/router/src/types.rs :: default
- hyperswitch/crates/router_derive/src/macros/generate_schema.rs :: parse
- hyperswitch/crates/api_models/src/routing.rs :: update_feature
- hyperswitch/crates/common_utils/src/lib.rs :: test_generate_id_with_alphanumeric_id