This class defines an axis within a DeepSee query.
Once calculated the axis key is stabilized for this particular object.
Copy of the original string used to produce this axis object
If true, then empty tuples (e.g. complete rows or columns) are removed from the results of the query.
This is equivalent to the MDX "NON EMPTY" key word.
Query that this axis belongs to.
Collection of subqueries associated with this axis.