Macro ffi_support::implement_into_ffi_by_protobuf

macro_rules! implement_into_ffi_by_protobuf {
    ($($FFIType:ty),* $(,)*) => { ... };
}

Implements [IntoFfi] for the provided types (more than one may be passed in) implementing prost::Message (protobuf auto-generated type) by converting to the type to a [ByteBuffer]. This [ByteBuffer] should later be passed by value.

Note: for this to works, the crate it's called in must depend on prost.

Note: Each type passed in must implement or derive prost::Message.