[Snippet rust]
```rust
pub fn format_emv_field(id: &str, value: &str) -> String {
    format!("{id}{:02}{value}", value.len())
}
```
Path: hyperswitch/crates/hyperswitch_connectors/src/connectors/santander/transformers.rs :: format_emv_field (function, crate=hyperswitch_connectors)

Negatives:
- hyperswitch/crates/hyperswitch_connectors/src/connectors/authorizedotnet.rs :: get_content_type
- hyperswitch/crates/common_utils/src/validation.rs :: detects_basic_sql_tautology
- hyperswitch/crates/router/src/db/kafka_store.rs :: filter_refund_by_constraints
- hyperswitch/crates/router/src/db/refund.rs :: filter_refund_by_constraints
- hyperswitch/crates/subscriptions/src/core/invoice_handler.rs :: get_amount_and_currency