The "base" information of an item as MIME format text/plain JSON
The data section of an item as a file even though it may be JSON
Optional
featureAdditional feature-service-only info
list of forward relationshipType/relatedItems[] pairs
The item's metadata as MIME format application/xml
The item's resource files
list of reverse relationshipType/relatedItems[] pairs
The item's thumbnail as MIME format image/*
Optional
workflowAdditional workflow-only info
Holds a complete AGO item.