walmartlabs/lumbar — comment on commit cfd6b8da3ab8c43bcce466aa65dcb6a09af3756e
File: docs/pages/plugins.md line 30
By jhudson8:

Yes, that is true - that what the "unless necessary" part is. It certainly depends on the purpose of the plugin but, if you look at the current set - just about all define an explicit mode (or modes)