[Snippet rust]
```rust
fn get_router_return_url(&self) -> Option<String> {
        self.router_return_url.clone()
    }
```
Path: hyperswitch/crates/hyperswitch_connectors/src/connectors/shift4/transformers.rs :: get_router_return_url (function, crate=hyperswitch_connectors)

Negatives:
- hyperswitch/crates/hyperswitch_connectors/src/connectors/zift.rs :: get_content_type
- hyperswitch/crates/diesel_models/src/organization.rs :: set_organization_name
- hyperswitch/crates/hyperswitch_connectors/src/connectors/nomupay.rs :: handle_response
- hyperswitch/crates/router/tests/connectors/flexiti.rs :: should_refund_manually_captured_payment
- hyperswitch/crates/router/src/core/revenue_recovery_data_backfill.rs :: determine_card_type