concrete

@get:JvmName(name = "getConcrete")
@set:JvmName(name = "setConcrete")
var concrete: Boolean
Whether this property contains a "concrete" sub-message, in which case, its properties are lifted to the parent
entity. During decoding, a property is added to indicate the concrete selection made. This is usually combined with
generic types in a one-of field, for instance, in `MenuProduct`.

bool concrete = 3;