EventBody

@safe
struct EventBody {
enum int eva_altitude;
@label("$p")
@optional
@filter(q{!a.empty})
Document payload;
@label("$m")
@optional
@filter.Initialized
Buffer mother;
@label("$f")
@optional
@filter.Initialized
Buffer father;
@label("$a")
int altitude;
@label(StdNames.time)
sdt_t time;
}