Update on env:

   general explorer: __explorer
   initial manifest: __manifest, __global
   type manifests  __object, __object_id, __global
   type explorers:  __object, __object_id, __type_explorers, __global
   type codegen:  __object, __object_id, __global
   type code:  -


- __object: Path to the object that we are working on
- __object_id: type unique object id
- __global: contains global information (see cdist-env