[Snippet rust]
```rust
fn get_creds_identifier(&self) -> Option<&str> {
        None
    }
```
Path: hyperswitch/crates/router/src/core/payments.rs :: get_creds_identifier (function, crate=router)

Negatives:
- hyperswitch/crates/hyperswitch_connectors/src/connectors/getnet.rs :: get_error_response
- hyperswitch/crates/hyperswitch_connectors/src/connectors/dwolla.rs :: get_supported_webhook_flows
- hyperswitch/crates/hyperswitch_connectors/src/connectors/opayo.rs :: build_request
- hyperswitch/crates/api_models/src/events/external_service_auth.rs :: get_api_event_type
- hyperswitch/crates/router/tests/connectors/jpmorgan.rs :: get_name