[Snippet rust]
```rust
fn get_connector_customer_id(&self) -> Option<String> {
        todo!()
    }
```
Path: hyperswitch/crates/router/src/core/payments.rs :: get_connector_customer_id (function, crate=router)

Negatives:
- hyperswitch/crates/router/src/events.rs :: add_tenant
- hyperswitch/crates/router/tests/connectors/nuvei.rs :: should_void_authorized_payment
- hyperswitch/crates/external_services/src/grpc_client/dynamic_routing/elimination_based_client.rs :: perform_elimination_routing
- hyperswitch/crates/router/tests/connectors/digitalvirgo.rs :: should_make_payment
- hyperswitch/crates/hyperswitch_interfaces/src/errors.rs :: is_connector_timeout