The MetadataType is intended as mechanism to capture any non-context-specific metadata.
| Field Name | Type | Description | 
|---|---|---|
| @typeoptional | string | This field specifies the type of name of a single metadata field. | 
| Value0..1 | string | This field specifies the value of name of a single metadata field. | 
| SubDatum0..n | MetadataType | This field uses recursion of the MetadataType specify subdatum structures for this metadata field. |