Optional allowIf set to true, the request will explicitly permit ArangoDB to return a
potentially dirty or stale result and arangojs will load balance the
request without distinguishing between leaders and followers.
Default: false
Optional graceful?: booleanIf set to true, null is returned instead of an exception being thrown
if the document does not exist.
Default: false
Optional rev?: stringIf set to a document revision, the document will only be returned if its
_rev property matches this value.
See also documents.DocumentMetadata.
Options for retrieving a document from a graph collection.