Module name_conv 

Convert Kafka schema identifiers (camelCase, PascalCase) into idiomatic Rust identifiers (snake_case for fields/modules, PascalCase for types), with reserved-keyword escape and acronym handling.

Functions

field_name

errorCode -> error_code, apiKeys -> api_keys, ZkMigrationReady -> zk_migration_ready, type -> type_ (reserved keyword).

module_name

ApiVersionsRequest -> api_versions_request (used for module file names).

type_name

ApiVersionsRequest -> ApiVersionsRequest (type name, unchanged). This function exists for symmetry. It is trivial today, but it is the single place to change if the rules evolve.