Module migrators

Module migrators 

Source

Structsยง

DeferredMigrator ๐Ÿ”’
A migrator that does nothing but delegates the explicit migration logic to post migrator(s)
NilMigrator ๐Ÿ”’
Migrator which preserves the head CID and provides a fixed result code CID. This is used to migrate actors which do not require any state migration.

Functionsยง

nil_migrator ๐Ÿ”’
Creates a new migrator which preserves the head CID and provides a fixed result code CID.