DataStructure           Data structure
as_dataset              Create a dataset
creator                 Get/set the Creator of the object.
datacite                Add or get DataCite metadata
dataset_bibentry        Get the bibliographic entries of a dataset
dataset_title           Get/set title of a dataset
datasource              Get/set the Source of the object.
describe                Describe a dataset object
description             Get/set the Description of the object.
dublincore              Add or get DublinCore metadata
geolocation             Get/set the Geolocation of the object.
identifier              Get/set the Identifier of the object.
iris_dataset            Edgar Anderson's Iris Data
language                Get/Set the primary language of the dataset
publication_year        Get/set the publication_year of the object.
publisher               Get/set the Publisher of the object.
related_item            Create a related item
rights                  Get/set the Rights of the object.
size                    Get/Estimate/Add the Size metadata to an object
subject                 Create/add/retrieve a subject
var_labels              Get / Set a variable labels in a dataset
version                 Get/set the version of the object.
