[ Version ( deprecated = true , deprecated_since = "0.11.0" , since = "0.4.0" ) ]
public string document_id { get; }
Warning: document_id is deprecated since 0.11.0.
The document ID of the document, which is different from its entry ID (GDataEntry:id).
This a substring of the resource_id, which is more general and should be used instead.
The <ulink type="http" url="https://developers.google.com/google-apps/documents-list/terminology_used_in_this_guide">
online GData Documentation</ulink> refers to these as “untyped resource IDs”.