fn prepare_csr_connection_avro(
catalog: &dyn SessionCatalog,
options: &SourceFormatOptions,
csr_connection: &CsrConnectionAvro<Aug>,
envelope: &Option<SourceEnvelope>,
) -> Result<Option<CsrAvroPreparation>, PlanError>fn prepare_csr_connection_avro(
catalog: &dyn SessionCatalog,
options: &SourceFormatOptions,
csr_connection: &CsrConnectionAvro<Aug>,
envelope: &Option<SourceEnvelope>,
) -> Result<Option<CsrAvroPreparation>, PlanError>