Q: Where does switch live in the Hyperswitch repository?
A: hyperswitch/crates/router/src/core/errors/transformers.rs

Distractors:
- hyperswitch/crates/external_services/src/email/smtp.rs
- hyperswitch/crates/pm_auth/src/connector/plaid.rs
- hyperswitch/crates/router/src/core/blocklist/transformers.rs