NoOp can be used as an importer stub while developing plugins.

SanitizeNameHint can be used to sanitize the name hint before passing it to the import candidate to improve the suggested item title.

TryAllEnvVars tries the specified environment variables one by one and adds import candidates with the specified field for each environment variable that is set.

TryEnvVarPair tries the specified environment variables and adds an import candidate if at least one environment variable is set.