[Snippet rust]
```rust
fn get_request_id_str(&self) -> Option<String> {
        self.api_client
            .get_request_id()
            .map(|req_id| req_id.to_string())
    }
```
Path: hyperswitch/crates/subscriptions/src/state.rs :: get_request_id_str (function, crate=subscriptions)

Negatives:
- hyperswitch/crates/router/src/db/kafka_store.rs :: delete_user_by_user_id
- hyperswitch/crates/common_utils/src/id_type/global_id/token.rs :: get_string_repr
- hyperswitch/crates/router/src/connector/utils.rs :: get_payment_method_token
- hyperswitch/crates/router/src/db/routing_algorithm.rs :: find_routing_algorithm_by_profile_id_algorithm_id
- hyperswitch/crates/api_models/src/analytics/sdk_events.rs :: from