Constant PROCESS_ERROR_FILE_BRIDGE 

pub const PROCESS_ERROR_FILE_BRIDGE: BatchWorkflowProcessErrorFileFn = process_error_file_bridge_fn; // {process_error_file::process_error_file_bridge_fn as for<'a> fn(&'a batch_mode_batch_triple::BatchFileTriple, &'a [batch_mode_batch_reconciliation::BatchErrorFileProcessingOperation]) -> batch_mode_3p::Pin<std::boxed::Box<(dyn std::future::Future<Output = std::result::Result<(), batch_mode_batch_triple::BatchErrorProcessingError>> + std::marker::Send + 'a)>>}

We expose a CONST of type BatchWorkflowProcessErrorFileFn, so passing &PROCESS_ERROR_FILE_BRIDGE exactly matches the trait’s needed function pointer type.