NewMetaManager creates a new meta data manager.

Defect is used when the linked issue is of type Defect/Bug.

Epic is used when the linked issue type is an Epic.

High severity issues should be tagged with this.

Low severity issues should be tagged with this.

Medium severity issues should be tagged with this.

Story is used when the linked issue is of type Story.

MetaManager is used to create and update meta information for.

Identifiable represents an object that has/needs an Identity.