Clones a dimension.
To clone:
* a bookmark, use CloneBookmark method
* a measure, use CloneMeasure method
* an object, use CloneObject method
public Task<string> CloneGenericDimensionAsync( string id, AsyncHandle asyncHandle = null )
Public Function CloneGenericDimensionAsync ( id As String, Optional asyncHandle As AsyncHandle = Nothing ) As Task(Of String)