Access or create spatial conditions associated with a volume grid.

Contains	Searches for a an element with a given name. Returns false if the specified element does not exist.
Remove	Removes a specified element.

Context	Returns a context object. The context can be used to find out which central body or STK object this instance is associated with.
Count	Returns a number of elements in the group.
Factory	Returns a factory object used to create spatial condition components.
Item	Returns an element by name or at a specified position.