A MediaReference Property is a property that references a media item.
The Ontologies API currently returns only media references associated with a Media Set View. Media references that identify a Media Set item directly, or reference a dataset file, are omitted from object-loading responses. Clients may therefore treat the property as having no value even though the media appears in Foundry.
In the underlying reference representation, mediaSetViewItem is supported; mediaSetItem
and datasetFile are not currently supported.