DefaultRetriable adds retry information to the provided error, and will refresh the info if the client info is stale.

ErrRecalculate may be returned by MigrateActionFunc to indicate that the object has changed and needs to have its information recalculated prior to being saved.

ErrUnchanged may be returned by MigrateActionFunc to indicate that the object did not need migration (but that could only be determined when the action was taken).

ErrNotRetriable is a wrapper for an error that a migrator may use to indicate the specific error cannot be retried.

ErrRetriable is a wrapper for an error that a migrator may use to indicate the specific error can be retried.

ResourceOptions assists in performing migrations on any object that can be retrieved via the API.

Reporter indicates whether a resource requires migration.

MigrateActionFunc is expected to persist the altered info.Object.

MigrateFilterFunc can return false to skip an item, or an error.

MigrateVisitFunc is invoked for each returned object, and may return a Reporter that can contain info to be used by save.