Companion

The command type of commandClass, a command aggregate decides or mounts, named as its model names it: context.aggregate.Name, the class's @Name else its simple name. What a CommandTransformer takes or gives, without writing the name by hand. A @MountedCommand class is mounted under the aggregate its annotation names: another aggregate fails here, where the transformer is built.

A CommandType of the given fields; parameters added later come last, with a default.