Credentials for the request to the source
Id of item supplying resource/metadata
Item being created
Resources for the item; these resources are modified as needed
by removing the templatization: the url
property is replaced by the file
property
Credentials for the request to the storage
Hash of facts: org URL, adlib replacements, deferreds for dependencies
A promise that resolves when all de-templatization has completed
Replace templatizations in an item's resources