Describes the resource that contains the media representation of a business event (i.e used for stating the Publicly Available Information). For example, can describe a file or a URL that represents the event. This type is an extended version of a type defined by RIXML (www.rixml.org). Rosetta restricts the FpML implementation by not providing the ability to associated a document in hexadecimalBinary or base64Binary until such time that actual use cases will come up.