In Parser, the Definition type has a dOrigin field that allows to track where a fragment of GraphQL type information comes from. This is useful for error reporting and internal repair mechanisms such as inconsistency tracking.

Morally, within the HGE codebase, this origin is always MetadataObjId. However, in order to avoid an import of RQL from Parser, the dOrigin has been defined through a type parameter of Definition. This type parameter then has to get threaded through throughout the Parser module hierarchy, so that it ends up in a lot of types. This is very noisy.

In order to avoid the noise of this type parameter, which really only has one value, and is really only used in one type, this module erases the type parameter by filling in the desired value, exporting type synonyms of the now-fixed notion of "origin". So most modules in the HGE codebase should import this module rather than Parser.