There are a few differences between AppStream's metainfo files (shipped by upstream projects)
and the catalog metadata (shipped by distributors).
The data source kind indicates which style we should process.
Usually you do not want to set this explicitly.
There are a few differences between AppStream's metainfo files (shipped by upstream projects) and the catalog metadata (shipped by distributors). The data source kind indicates which style we should process. Usually you do not want to set this explicitly.