In module definition one can declare certain packages to be api and certain packages to be just helpers which are only available in the module for api packages to work.

When I am looking for a certain package, for example with where-is-package subcommand, i need to see explicitly what kind of package is provided so that i can prioritize modules which provide api-packages over modules which provide same package as a helper.

Same for list-rpms and module-packages subcommands