[Snippet rust]
```rust
fn get_mandate_id(&self) -> Option<&payments_api::MandateIds>;
```
Path: hyperswitch/crates/router/src/core/payments.rs :: get_mandate_id (function, crate=router)

Negatives:
- hyperswitch/crates/events/src/lib.rs :: new
- hyperswitch/crates/hyperswitch_connectors/src/utils.rs :: get_original_amount
- hyperswitch/crates/hyperswitch_connectors/src/connectors/billwerk.rs :: get_supported_payment_methods
- hyperswitch/crates/hyperswitch_connectors/src/connectors/shift4/transformers.rs :: get_address_details
- hyperswitch/crates/hyperswitch_connectors/src/connectors/worldpayxml.rs :: get_headers