SBE Intermediate Representation
The serialization format Simple Binary Encoding (SBE), meant for low-latency financial programs, has an intermediate representation (IR) between its XML-based schemas and the generated code for writing and reading messages. The IR is itself a SBE message. It uses the extension .sbeir.
It is possible that the IR format is not in the SBE specification proper, but rather is only part of the reference implementation, as it does not appear in the official specification.