InternalCreates a new attribute component.
The attribute data object
Internal
The components written in this one's place, one after another, when it can't be written as a single element, such as a run with another run in its children. Undefined when it is written as itself.
Converts the attribute data to an XML-serializable object.
This method transforms the property names using xmlKeys (if defined) and filters out undefined values.
Context (unused for attributes)
Object with _attr key containing the mapped attributes
Attributes for the document background element.
XSD Schema (ST_ThemeColor)