Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Related to full support for Rust FFI (to pass bytes back and forth with other implementations)

Specifically, as reported by Roee Shlomo, when a struct array is passed to the rust FFI implementation, this error is made:

CDataInterface("The datatype \"Struct([Field { ... }])\" is still not supported in Rust implementation")'

Describe the solution you'd like
Implement FFI / CDataInterface for Struct Arrays

Describe alternatives you've considered
TBD

Additional context
See thread in ASF slack: https://the-asf.slack.com/archives/C01QUFS30TD/p1620058016382800